Question

Why menstruation does not occur during pregnancy?

Answer 1

$\textbf{\large{Answer -}}$

Every month the ovary releases one ova or oocyte.

Then the ova is transported to fallopian tube which is the site of fertilisation.

The fertilised egg then moves to uterus where the walls are thickened in order to provide nutrition.

If the cell doesn't fertilise then the wall of uterus breaks and it turns to menstruation.

So, if the egg is fertilized then there is no chance of fertilisation again or of menstruation.

Answer 2

Heya mate
The answer of ur question is



Mensuration does not occur during the pregnancy because the human chroinoc gonadotropins maintains the corpus luteum amd stimulate it not to secrete progesterone Egg cell does not get secrete which does not lead to its outbrust



hope it helps