Why does a woman not have a period during the term of her pregnacy?

Q. I'm studying about reproductive system in science and I got a question why woman does not have period during pregnancy. I just wonder why, anyone please help me out. Thanks a lot~~~

A. Menstruation is the lining of the uterus (Endometrium) shedding because the egg that dropped during ovulation was not fertilized. So when the egg it fertilized, the lining turns into the placenta which supports the embryo during pregnancy.
You can read this website :http://en.wikipedia.org/wiki/Endometrium


is bloating a possible sign for pregnancy?
Q. so, my girl and i had sex 17 days ago and her menstruation should start soon, but the thing is, that she is feeling bloated after eating even a little. i read, that during pregnancy, women get bloated (BUT does that happen in week 3) and also that before menstruation they get bloated after eating. so, can someone tell me if they get bloated during pregnancy after eating something, or that just happens? btw, she doesnt have morning sicknesses and she doesnt go to the bathroom more often than before.

A. Could be pregnancy, or it could be that her period is coming.

No way of knowing until her period is late. If it is, do a test.


What happens when the sperm reaches the egg during your period?
Q. Would your period slow down or get lighter because you dont usually go on your period during pregnancy...

A. The sperm wouldn't reach the egg during your period because you wouldn't ovulate during your period.

You can get pregnant from sex you have during your period because sperm can live in your body for several days under the right conditions, but you cannot ovulate while you're menstruating. The process of menstruation is the shedding of the uterine lining. If you conceived during that time, the egg would have nothing to attach to and it wouldn't implant.


Why might a lactating woman need to take an iron supplement?
Q. A- To improve the flavor of breast milk
B- To increase iron content of breast milk
C- To replace the iron stores she lost during pregnancy
D- To account for the re-start of menstruation that usually occurs 1-2 months postpartum

Thanks!

A. B- To increase iron content of breast milk





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