Fetal Development

No you can not

In the 2nd week of pregnancy before most women know they are pregnant.

The First Trimester

By the time an embryo makes its way into the womb and attaches itself to the uterine lining, it has developed from a single egg into an embryo complete with all of its DNA information. The authors of What to Expect When You're Expecting describe the embryo as "tadpole-like" at this stage, smaller than even a grain of rice, but point out how quickly the tiny mass of cells is developing. By the end of the first month the baby has a head with a mouth opening, a basic heart and the beginning of a brain.

The Second Trimester

Throughout the first trimester (conception through three months), a baby grows at an astonishing rate, turning from a tiny group of cells into a fetus about the size of peach. The typical baby at thirteen weeks of pregnancy is between 2.5 and 3 inches in length, crown-to-rump . A fetus draws nutrition from its mother, so it's important that pregnant women eat healthy food at regular intervals to nourish their growing babies.

The Third Trimester

During the second trimester (four to six months), the baby continues to grow rapidly, reaching 9 inches crown-to-rump by month seven. The uterus at this point is roughly the size of a soccer ball. Because skin is developing at a faster rate than fat, the baby's skin will be loose, red and wrinkled. Babies also grow short, fuzzy hair on their bodies called lanugo, which will disappear during the last trimester. The baby's internal organs are maturing and he is able to swallow amniotic fluid and urinate. The baby now has a fully formed face, and some babies have even been photographed sucking their thumbs in the womb during the second trimester.

The Last Month

The baby continues to gain weight rapidly during the last trimester (seven to nine months). By the end of the seventh month, the average baby weighs around 3 pounds and measures about ten inches crown-to-rump . The lanugo begins to disappear at this point, while hair starts to grow on the baby's head. Around seven months the baby has eyebrows and eyelashes. The baby's brain develops rapidly during the last trimester, which is just one of the reasons premature labor is not preferable. The lungs also mature near the end of pregnancy, though a baby who is born early is still likely to survive because of advanced medical technology.

Over the last few weeks of pregnancy, a baby nears his birth weight and length. Her skull is not fully solid, which will help in the birthing process. As the baby moves through the birth canal, his head is slightly flexible and able to shift without harming the baby's brain. A few weeks after birth, his head will again be round.

From what I understand, you should see a fetal pole by that time. However, I would go back for another u/s in about a week to see if things have changed or not.

By about week 10.

http://www.babycenter.com/6_your-pregnancy-10-weeks_1099.bc?intcmp=timeline

1 to 2

the fetus is in the yolk sac

Sounds like Braxton Hicks contractions. Not to worry, they are "practice" contractions. If they get painful, call the doc right away.

Chances are, something happened to the twin. But since the remaining baby has lots of room to grow, it will probably be born as if it were a single.

Probably over 600 grams (1.3 lbs). Maybe as long as 30 cm (12 inches) stretched out.

Youi can get heart burn at anytime, so it's not a reliable indication.

Without touching you, no one (father of the baby included) can feel the baby moving. They might be able to see the movement (especially with particularly energetic babies) on the surface of your abdomen but they will not be able to feel it without touching.

by the placenta.

Unless a doctor answers your question here, you must ask your own physician. This is a very serious matter you are questioning. -Mame-

The purpose of the air sacs in a bird is to help digest food into the gizzard, and to help it breathe, and stay in the air longer and more smoothly. Hope this helps!

a good rule of thumb is to remember to look after your own health. generally you can feel the fetus and if iy's a little quiet for a couple of days theres no harm in ringing a doctor.

I don't think so! :) More info: As the baby develops and grows bigger, it may seem as though s/he is moving in your back. The baby's limbs and head can push on your internal organs, which can cause a sensation of movement in your back, and even upwards towards the lungs. This can be even more common if the baby is large, or if you are carrying twins or triplets. If you've had an ultra sound, it would have shown if there were any abnormalities, such as any sort of displacement of the uterus. So unless there are no other sypmptoms, or no problems, there shouldn't be anything to worry about. But you should mention it to your doctor at your next pre-natal visit just for peace of mind.

Most likely not, if this was your only intake of an alcoholic beverage; but no more drinking during pregnancy - it is not worth the potential bad outcome

embryonic

no, he is the only son of god

I'm no doctor but i would say absolutely not!! It can be still to soon. I didnt hear my sons heartbeat until i was almost 12 weeks since it was very faint. I was told because of position, etc that it couldve distorted it. Dont jump and do anything be patient and let nature do its course. I think she will be fine. Best wishes

Generally a transvaginal ultrasound can spot a baby in the womb at around 4 weeks (give or take 5 days)

Ask your medical team, they are the ones doing the scans, they should answer your questions. Each baby is individual so answers must be individual.

i heard that it does, then i heard it doesnt. I think it depends on how hard.