Fetal Development

Fetal development refers to the stages of development of the fetus. In humans, there are three stages of development, divided into three trimesters. The fetus continues to develop from the day of conception until it is born after nine months.

4,346 Questions
Pregnancy
Ultrasounds
Fetal Development

How soon can you hear a baby's heartbeat?

The baby's heart beat can be seen on an ultrasound at around 7 weeks, and if you are very slim MAY be heard on a Doppler from 9 or 10 weeks. Here is more advice and input: * Most Heartbeats can be heard by 15/16 weeks. * My doctor wasn't able to hear my babies until I was about 3-4 months pregnant. * It is most generally possible to begin to hear the baby's heart beat at the beginning of your second trimester, however sometimes it is possible to hear it a couple of weeks before or after these dates as well. It most likely depends on the size of the baby and how quickly it is growing in each individual person. I personally heard my baby's heart beat the first time at 14 weeks with my first, 13 weeks with my second and 10 weeks pregnant with my current pregnancy. * You can start to hear the babies heartbeat through ultrasound as soon as 6 weeks into your pregnancy! A Doppler can start to pick up a heartbeat at around 10-14 weeks into your pregnancy. A stethoscope can be used to hear the baby's heartbeat late in the pregnancy. * If you have an early scan it can be seen from about 6 weeks. If listening with a Doppler and you are very slim sometimes (not always) it can be heard from about 8 weeks. A midwife listening with a Pinard can hear it from about 22-24 weeks. * You may be able to see it on an ultrasound at about 7 weeks but unless you are very thin you won't be able to hear it with a Doppler until about 10 weeks, possibly later. Until 12 weeks the uterus is still in the pelvis and the heart is very small and the machine has to be pointed directly at the heart so the sound is reflected, unlike a microphone. * I heard my baby's heart beat at almost eight weeks and it was very strong :) I think everyone is just different it depends largely on your specific pregnancy

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Pregnancy Symptoms
Fetal Development
Braxton Hicks Contractions

What are possible alternative causes for Chadwicks sign Hegars sign Goodells sign Braxton Hicks or Ballottement?

Ballottement indicates an increase of fluid over the patella at the knee joint - this has more to do with an injury or infection and nothing to do with pregnancy.

Braxton Hicks or practice contractions are uterine contractions not usually felt until the second trimester or third trimester of pregnancy - the only cause of Braxton Hicks is pregnancy.

Chadwick's sign is a bluish discoloration of the cervix, vagina, and labia caused by the hormone estrogen, its presence is an early sign of pregnancy.

Goodell's Sign is a softening of the cervix and vagina - an indication of pregnancy.

Hegar's sign is a softening at the cervix (lower end) and the fundus (top of) the uterus - an indication of pregnancy.

While similar conditions may have alternative causes - Braxton Hick's, Chadwick's, Goodell's and Hegar's are all found in pregnancy.

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Fetal Development
Marijuana

How long does marijuana stay in a fetus's system?

According to some doctors, about 30 days. But this depends totally on how much Marijuana has been smoked, for how long and how frequently.

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Pregnancy Health and Safety (Prenatal Care)
Spiders
Fetal Development

Can baby Orange baboon spiders harm you?

All spiders have at least a small amount of poison, though this is miniscule in the infantory status. Even a baby black widow would be unlikely to cause serious harm to a child unless they were alergic. Baboon spiders are slightly less poisonous than black widows....but I wouldn't want them around to mature. Also when an egg sac opens there's a potential you could get swarmed...though most species tend not to eat for the first couple of days.

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Health
Fetal Development

When does a child's heart start beating inside its mother's womb?

A child's heart will start to beat at 8 weeks.

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Pregnancy
Pregnancy Symptoms
Fetal Development
Fetal Movement

When are you supposed to feel the baby move?

I have just had the great news that me and my husband are expecting our first baby. This is thrilling news but now I am trying to gather as much information as I can. I'm currently at week 6 and am already feeling "hormonal" and can sense changes in my body, but I want to know what to expect in the future. What would be perfect for me would be a week by week guide to pregnancy which highlights all of the key milestones at that stage. I know I am asking a lot but does anybody have the titles of books on the subject or maybe web articles on the topic. Thanks for all those that help with this request, your support is appreciated.

parentsneed.com/week-by-week-guide-to-pregnancy

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Fetal Development
Fetal Movement
Trimesters

Is fetal movement in the second trimester irregular?

Second Trimester Fetal MovementSome woman feel their baby move in the first trimester. It is usually a fluttering feeling in their stomach. You will not feel the baby move everyday. It depends on how active you are and how comfortable the baby is. Here is a tip if you are concerned. During my pregnancy, when I would have periods of non-movement with my baby, my OBGYN informed me to lie in a tub full for warm water. The warm water will help your blood circulate more through your body, which in turn will wake the baby up and cause him/her to start moving around.

Here are answers and opinions from Wiki s contributors:

  • If you want to know for sure if it's the baby moving, like the last person said you should take a warm bath (NOT hot) and also, try a juice box that has a little sugar. This tends to make babies more active, and may help you to feel the movement. And no, it's not irregular - many moms have been known to feel movement between 17-18 weeks. Also, if you're not a first time mom, you may be more tuned in and you may feel your baby move earlier.

first time Mums often don't feel the baby move until around 20 weeks, second time around you are more 'tuned in' and feel it earlier. However the baby has plenty of room to move and as you can only feel it if it touches the front of the uterus (just under the skin where the nerve endings are) you will not feel much especially if the placenta is at the front as well.

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Pregnancy
Ultrasounds
Fetal Development

How many weeks until you know the sex of the baby?

Before your pregnant:: It depends on when you find out that your pregnant, after about 4-5 months you should be able to see. ((That MAY be correct, don't count on that being for sure though)

After you give birth:: It should be obvious at that point. =)

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Pregnancy Health and Safety (Prenatal Care)
Fetal Development
Heart

When does a fetus develop a heart beat?

  • At 18 days [when the mother is only four days late for her first menstrual period], and by 21 days it is pumping, through a closed circulatory system, blood whose type is different from that of the mother. J.M. Tanner, G. R. Taylor, and the Editors of Time-Life Books, Growth, New York: Life Science Library, 1965, p.
  • With an ultrasound, at about 3 or 4 weeks. With the device the doctor uses in the room, at about 9 weeks. I don't know for the things you buy at the store.
  • I am going to disagree with this last answer. With a vaginal ultra sound a heartbeat can be detected as early as 6 weeks gestation but more commonly by 7-8 weeks gestation. Of course she could be right and we are just counting the weeks differently.
  • With my first child my Dr. could hear my son's heart beat at 7 weeks with out a ultra sound and now being pregnant with my second child and having the experience in a medical setting working in a OB practice I have heard my baby's heart beat at 5 weeks and 3 days.
  • Mayo Clinic says the heart begins to beat at 5 weeks and may be seen with an ultrasound.
  • But note that the Mayo Clinic, numbers the weeks according to the start of the last period, so that conception is regarded as happening in week 2; thus the heartbeat begins during the 4th week after conception.)
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Pregnancy Health and Safety (Prenatal Care)
Ultrasounds
Fetal Development

If you have fetal pole and heart beat but you are 12 weeks pregnant?

A fetal pole and heartbeat are signs of a healthy pregnancy at 5 ½ to 6 ½ weeks.

If there is a heartbeat, you have every reason to think you are having a healthy pregnancy. I would suggest maybe there is some miscalculation of the dates and further testing needs to be done; a serum hCG level, with a repeat in 6 days and an ultra-sound repeated in 3 to 7 days, should clear up a lot of questions. Below are the specific things to look for in the first trimester that will indicate pregnancy is progressing normally.The first trimester weeks 1 through the end of week 13.Weeks 3 -5 Since LMP - (Fetal Age 1 - 3 weeks): Between day 6 - 12 after conception, the blastocyst will imbed into the uterine lining, marking the beginning of the embryonic stage. At this time the thickening of the endometrium (uterine lining) is evident.

After the embryo implants into the endometrium, hCG starts to rise 18 - 7,340 mIU/m is a normal level and it will continue to double every 2 to 3 days. Before an embryo is visible, the yolk sac can be seen inside the gestational sac - late in the 3rd week.

Week 6 Since LMP - (Fetal Age - 4 weeks): A vaginal ultrasound could possibly detect an audible heartbeat at this time. The embryo is about a ½ inch in length.

5 ½ to 6 ½ weeks is usually when either a fetal pole or even a fetal heart beat by vaginal ultrasound is detected. The fetal pole is the first visible sign of a developing embryo. Normal hCG levels are 1,080 - 56,500 mIU/ml.

Week 8 since LMP - (Fetal Age - 6 weeks):Everything a full grown person has, your embryo now has (in miniature) The bones are beginning to form, and the muscles can contract. The embryo is at the end of the embryonic period and begins the fetal period.

A normal heartbeat at 6-7 weeks would be 90-110 beats per minute. The presence of an embryonic heart beat, is an indication of a healthy pregnancy. hCG levels will run 7,650 - 229,000 mIU/ml at 7 to 8 weeks.

Weeks 9 -13 since LMP - (Fetal Age - 7 to 14 weeks): The fetus has grown to about 3 inches in length and weighs about an ounce. The fetus can make a fist, and the buds for baby teeth appear. The head is nearly half the size of the entire fetus.

The hCG levels will peak at about 8-12 weeks of pregnancy normal levels will run from between 7,650 - 288,000 mIU/ml.

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Pregnancy Health and Safety (Prenatal Care)
Fetal Development
Fetal Alcohol Syndrome and Alcohol Consumption During Pregnancy

Can drinking alcohol within two weeks of conception harm a fetus?

Drinking Alcohol After ConceptionWouldn't it be nice if you heard "Ding! You Got Pregnant." You know, kind of like that annoying "you got mail" from AOL?

But, that biotechnology doesn't exist (not yet, anyway) and most mothers-to-be are oblivious that baby-making has begun until several weeks into it. In the meantime, they are apt to have done many things they wouldn't have done if only they had known.

Luckily, this is a concern that you can forget about. There's no evidence that a couple of drinks on a few occasions very early in pregnancy can influence harm on a developing embryo. So you, and others, can let this one go.

  • I apologize for interjecting here but you can't make a sweeping statement like "you and others can let this one go" when the question applies to social drinkers and hardcore alcoholics alike. The question posed doesn't say nor imply "a couple drinks" so you can't assume that EVERY reader only had "a couple drinks". Or, you can, but then the answer doesn't satisfy. I don't know the answer--I had this question myself when I came here--but this is the thousandth website I've looked at tonight where the answer is "relax, a couple drinks isn't gonna kill you". OK but what if I didn't just have a couple drinks but a LOT of drinks within two weeks of conception? I have this same question but for my case (where it was more like "a couple" every couple hours), then what?

That said, it's definitely time to change your choice of drinks. If you continue to drink regularly throughout your pregnancy, you risk a wide variety of problems in the baby, including Fetal Alcohol Syndrome (FAS). Alcohol enters the fetal bloodstream in about the same concentrations present in the mother's blood. Meaning, each drink the mother takes is shared with the baby.

Here are answers and opinions from FAQ Farmers:

  • I was concerned about it, too! I was three weeks pregnant, didn't know it yet, had few glasses of wine and got a little drunk. When I found out I was pregnant it was the first thing I asked my doctor and he said that it was too early to harm my baby � which by that time was an embryo. Besides, by that time early in pregnancy, there is not yet nutrition from you to the baby through the placenta, so I heard.
  • Thanks to my best friend's bachelorette party, I had two 'binge' drinking episodes where I was completely drunk out of my mind before I knew I was pregnant (I was probably 2-4 weeks along.) My son is now 6-years-old and has no problems, nor did he as an infant. I hope this eases your mind. I know a TON of people who have had this same issue and their children are just fine. Obviously, don't CONTINUE to drink.
  • As I've heard that the embryo is feeding off of the yolk of the egg rather than getting nourishment from the placenta in the first 4 weeks, it probably shouldn't have much of an effect. I've also heard that drinking in the early weeks is more likely to result in miscarriage than FAS.

    It would be great if a doctor could interject here and tell us the risk of 2 or 2 big drinking sessions in the first few weeks (and maybe further the next few weeks before we knew we were pregnant). There is a lot of conflicting information out there, and the most common thing to happen is that someone comes in and says "you shouldn't drink at all, are you crazy?", well how many people know they are pregnant in the first few weeks? We are trying to manage the risk of what has already happened. None of us are going to continue drinking, so let's start from here.

  • Drinking during the first few weeks of pregnancy can harm your baby. The identifying facial features on a child with FAS are formed between day 18 and day 21 of gestation. Lets be clear that a glass of wine or a beer with a burger will probably not affect the baby but you can bet that binge drinking during that time can have a sever impact on the baby. If you continue to drink during pregnancy things will only get worse. Alcohol is pasted freely through the placenta to the baby. The baby has no liver or an under developed liver and can not process the alcohol. Therefore the alcohol poisons the child and can result in brain damage.
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Fetal Development
Pregnancy Gender Prediction

Why are some babies boys and others girls?

it depends on the chromosomes in the MALE. in females there are xx chromosomes, and in men there are xx AND xy chromosomes, so if xx chromosomes meet then its a girl, if xy chromosomes meet with an xx chromosone in the women at the ovum, then there will be a girl!

josh Rhodes your welcome :)

----

Just an additinal, there should be 46 chromosomes to have a normal baby , 23 from male and 23 from female.

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Pregnancy Symptoms
Fetal Development
Fetal Movement

Is it normal to not feel the baby move after the fifth month?

The moving of your baby is usually very reassuring. It isn't unusual for a baby to have quiet times when there is not a lot of activity. It may help to lay on your side to notice if the baby is moving or if it is still. If you feel the baby is not as active as what seems normal, discuss it with your doctor. You can always visit your doctor to hear the baby's heartbeat, but in most instances, there is nothing to worry about. Good Luck, Stacey I am in my 5th month of pregnancy also,And it helps to lay on my back,or to lay on my side and just leave my hand on my stomach to catch its quick moves. While it may be normal in some cases I would just like to add that I was pregnant at four months my doc told me the baby was under weight and would be ok. At five months I hardley ever felt him move. At six month I had lost all my fluid and had him he only weighed one pound and almost did not make it he is healthy now. Just be very careful and make sure if you think something is not right go strait to your doctor.

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Pregnancy
Periods while Pregnant
Fetal Development
Fetal Movement

When does a larger woman feel the baby move?

When I was pregnant with my first (I have 4) it seemed like it took forever to feel the baby move. I don't think it had anything to do with my size. You probably just don't recognize the movement for what it is. I am very large, and the second time around I think I was about three months when I felt the baby move. I am thinking it was around the 4th-5th month with my first. I am a large woman and i think that sometimes during the first one you think that you feel something. sometimes you feel fluttering and its just small movements. you can really start to feel some real kicks around the fourth month. as you go along they get stronger. I've had 3 and i started to feel kicks about the end of the fourth. but everyone is different. Most women, large or small, feel a first baby move around 20 weeks. I remember vividly when I felt mine as we were visiting family and when I screamed they thought I had hurt myself. Second and subsequent babies are usually felt about 15-16 weeks. One of the reasons I thought I was having twins was because I felt movement at 13 weeks. A partner or friend may not feel the baby move because of intervening fat but as the woman feels it from the inside her size makes no difference

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Pregnancy Health and Safety (Prenatal Care)
Fetal Development
Fetal Movement

Baby not moving a lot at 39 weeks is this normal?

That would depend on what you mean by "a lot." Considering the fact that the baby has almost no room to move at 39 weeks, decreased movement is normal. Complete lack of movement is not. If you are concerned, go to your doctor and have him/her listen for the heartbeat.

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Pregnancy
Fetal Development
Vitiligo

How do you avoid hurting your baby in the womb?

Avoid any activities which might put you in danger of hurting your tummy. Don't start a new exercise program when pregnant. Eat healthy food. Drink plenty of liquids. Take prenatal vitamins. Don't use drugs, alcohol, or tobacco. Stay away from second-hand smoke.

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Pregnancy Symptoms
Miscarriages
Fetal Development

Can you hear a heart beat at 2 weeks?

No typically the heart does not start beating until 6 weeks, but the way pregnancy is measured at "2 weeks pregnant" you aren't even pregnant yet, since most women ovulate 2 weeks after the first day of their last menstrual cycle. That would be when you are two weeks pregnant when you are just ovulating. So if you mean can you hear the heartbeat two weeks after you find out your are pregnant then yes, you should because you would actually be somewhere between 5-7 weeks along.

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Fetal Development
In Vitro Fertilization

What are test tube babies?

  • Test tube babies are babies that are created in a test tube by taking one sperm cell and one egg cell and combining them. So the baby starts to develop in the test tube and is then implanted into the mothers uterus.
  • You were pretty much right. Test tube babies are also called In Vitro babies. I think the spelling is right. It literally means "in glass." A sperm and egg are taken from two separate donors. The protective shell that exists on the surface of the female egg cell. When this shell is removed, the sperm cell is allowed to fertilize the egg. After fertilization happens, the zygote is allowed to grow for a while in a nutrition solution. This concoction is placed in a test tube, hence test tube baby. After the cell cluster has reached a certain maturity, it is implanted into the surrogate mother. This is the most risky part of the process, as the cells have to bond to the Uterus wall. After they have bonded, the process is officially complete. After a nine month gestation period, a baby is born.
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Fetal Development

Can you feel your baby heartbeat in your neck with your finger?

I think you can most definitely feel the baby's heartbeat in the mother's neck with your finger, because I was pregnant before and I was able to see and feel my babies heartbeat in my neck

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Fetal Development
Fetal Movement

Is it possible 2 feel your baby move a one month?

No; one month is 4 weeks, it's an embryo & only a few centimeters long. Most people do not feel their baby move until 18-22 weeks pregnant.

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Pregnancy Health and Safety (Prenatal Care)
Ultrasounds
Fetal Development

When pregnant do you hear two heartbeats or just one?

No not necessarily

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Ultrasounds
Vital Signs
Fetal Development
Fetal Movement

What if fetus heartbeat is 140 is it a boy or girl?

Fetus sex can be determined by ultrasound only after the genitals have somewhat formed. It is not possible to determine the fetus's sex judging by HR. Although women have a higher HR than men, extrapolation to fetus is not possible keeping in mind things go a lot different when you breathe amniotic fluid instead of air.

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Fetal Development

What does the fetus give back to the mother?

blood, waste

179180181
Pregnancy
Babies
Dog Behavior
Fetal Development

Is it normal for a baby to be kicking all the time?

It's a good thing that your baby kicks, it will always tell you that he or she's doing fine! It might be painful and uncomfortable but the baby is fine, he/she is just active, so be prepared for when he/she turns 2!

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Pregnancy Symptoms
Ultrasounds
Fetal Development

Is it possible to hear a baby's heart beat loud and strong at nine weeks pregnant?

With a doctors "listener" it can be heard. I wouldn't say loud and clear, but it's possible it could be loud and clear, depends on the woman and the baby.

AnswerYes I heard my babys heartbeat at 9 weeks pregnant with a at home fetal monitor. AnswerA vaginal ultra sound can detect a heartbeat as soon as 6 weeks gestation but more commonly at 7-8 weeks. The fetal Doppler used on the outside of your belly should pick up a heartbeat at 12 weeks clearly. AnswerA fetal heartbeat can be heard as early as 8-10 weeks pregnant using a good fetal Doppler such as one rented from Tummy Tickles or a company like that. AnswerYes it can be heard. I had an ultrasound at 7 weeks and heart it perfectly and then again at 9 weeks on a Doppler in the doctors office.
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