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human chorionic gonadotropin (HCG)

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Q: To prevent menstruation and to sustain pregnancy the trophoblast cells of the implanted embryo must secrete for the first five or six weeks?
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Related questions

What is IUD stand for?

Intra-Uterine Device. It is a device implanted in the uterus to prevent pregnancy.


Does the IUD make you irregular?

yes, it can affect your cycle because it tricks the body into thinking you have an implanted fetus--that is why it works to prevent pregnancy Joymaker rn


How stressed do you half to be to delay a period?

When we talk about stress delaying menstruation it has to be stressed enough to cause physical strain. Stress can delay ovulation as the body will try to prevent pregnancy when it can't cope, and thus in turn delayed ovulation leads to delayed menstruation.


Can marijuana prevent pregnancy?

no it can't prevent pregnancy


Can bv prevent pregnancy?

BV won't prevent pregnancy.


Vitamins to prevent pregnancy?

Vitamins don't prevent pregnancy.


Why do breast hurt a few days before a mentrul period?

It is common to have the tender breasts before the menstruation. This is due to effect of the progesterone hormone. The tenderness will go away and you expect the menstruation next day. The tenderness persists during the pregnancy.


Does the bipolar drug lithium prevent pregnancy?

Lithium does NOT prevent pregnancy.


What happens when a girl gets her period right after conception?

This wouldn't happen. Ovulation occurs around two weeks before menstruation, if fertilisation occurs the egg travels down the fallopian tubes to implant in the uterus, pregnancy hormones act to present menstruation so that the zygote/embryo isn't lost. Some women can have a shorter luteal phase (the phase where the fertilised egg would travel to the uterus and implant) which may mean that there isn't enough time for the pregnancy hormones to act to prevent menstruation, thus the pregnancy wouldn't occur. But no one would have a luteal phase so short as to cause menstruation straight after ovulation.


Can hot water prevent pregnancy?

NO ! ONLY contraception or abstinence can prevent pregnancy !


Is cytotec good to prevent pregnancy?

No. Cytotec can be used for abortion but not to prevent pregnancy.


Why is that starch prevent pregnancy?

Starch as in pasta, potatoes etc? That does not prevent pregnancy.