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Q: How does a doctor know how old a fetus is?
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How do you know if your 21 week old fetus died?

You have a ultrasound.


How can you tell how far pregnant you are if you do not know the exact day of your last normal period?

That would be a good question for your doctor. The doctor might suggest an ultrasound. From the ultrasound picture, the technician can estimate how old the fetus is and predict your due date.


How do you know your baby's genotype in the womb?

It is possible to know about your baby's genotype in the womb. If one has a great deal of money, they can pay a doctor to do special testing on the fetus.


Does the smell of snuff hurt a fetus inside of you?

Just the smell of snuff cannot hurt a fetus. But if you kiss someone after they have had snuff in their mouth, some of the chemicals in snuff can transfer to your saliva. I do not know of any studies about the "effects of secondary snuff" on a fetus; ask your doctor.


Are fire alarms dangerous to fetus?

I don't know who (or shall I say what) you did it with, but I'd go see a doctor sooner than later.


Can you still have kids if you are on seizure medication keppra?

You need to consult your doctor in this. Keppra can be taken if you must but they don't know the effect on the fetus.


Between prenatal visits how do you know the fetus is ok?

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.


How could your fetus disappear on the second ultrasound?

either the doctor made a mistake or the fetus died and your body was eliminating it


If you are taking phentermine and become pregnant but dont know it will phentermine kill the fetus?

This drug may not kill the fetus instantly. This drug may have bad effects on the baby. You should ask you doctor what medications are safe during your pregnancy.


Will it hurt the fetus to jog when you are pregnant?

No, but get your doctor's advice first


What kind of doctor looks at the development of a fetus?

obstetrician-gynecologist


Does Clarinase affect pregnancy?

They don't know so it should be used only if the potential benefit justifies the potential risk to the fetus. Speak to your doctor.