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Menstruation stops during pregnancy for a couple of reasons. First, the hormones that the corpus luteum (the place on the ovary where the egg came from) secretes include progesterone which stops the follicle stimulating hormone. Follicle stimulating hormone (FSH) is what makes your ovary grow eggs and it stops because of the progesterone. Second, when the follicle stimulating hormone is not present, a new egg will not grow. Without a new egg to grow, ovulation will not occur and progesterone will not drop so your lining will stay put until you give birth.

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Q: Why does menstruation stop during pregnancy?
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Related questions

Can you ovulating during pregnancy?

No, there is no ovulation or menstruation during pregnancy.


Can you be pregnant during menstruation?

Probably not, however there have been cases of pregnancy and a mild menstruation during first trimester of pregnancy.


How does pregnancy stop menstruation?

because the ovaries stop realising eggs


What are the chances of pregnancy if your on your period?

Can Women Get Pregnant During Menstruation?


Can period continue in pregnancy?

No, menstruation cannot contrinue during pregnancy. Menstruation will only occur if the egg during ovulation is not fertilised. You cannot menstruate while pregnant, although you can bleed for a few reasons so if you do experience bleeding during menstruation you should see your doctor.


What layer sloughs off during menstruation?

The endometrial layer of the uterus sloughs off during menstruation. This layer thickens throughout the menstrual cycle in preparation for a potential pregnancy, and sheds if no pregnancy occurs.


Does menstruation occur if the egg is fertilized?

No, menstruation does not occur if the egg is fertilized. Instead, the fertilized egg implants in the uterus to begin pregnancy. If fertilization does not occur, then the uterine lining sheds during menstruation.


Does having a bath during periods stop the periods?

No, having a bath during periods does not stop periods. Menstruation isdetermined by your menstrual cycle, water is amazing but it does not have the magical ability to stop time in order to stop menstruation.


Can you have a period first month of pregnancy?

No, you cannot have a period the first month of pregnancy or at any other time during pregnancy. Menstruation occurs if the egg has not been fertilised, and you cannot menstruate during pregnancy.


Why does your menstruation stop when a woman is pregnant?

Menstruation is what happens when a woman doesn't get pregnant - after ovulation the uterine lining builds-up in preparation for possible pregnancy, if a woman doesn't get pregnant then menstruation occurs to shed the uterine lining so it can start fresh next cycle. During pregnancy the uterine lining is busy keeping the growing embryo/fetus safe, and women no longer ovulate.


Can menstruation cause a pregnancy test to be positive?

if you're taking a pregnancy test during your period then you're very very stupid. No baby during period


Do you always miss your period when you're pregnant?

Yes, when pregnant you do not menstruate. Many women can bleed during pregnancy for a number of reasons, and they may mistake this vaginal bleeding with menstruation, however menstruation is a very specific function which is stopped during pregnancy.