Why is missing of menses the first indication of pregnancy?

Dear Student

Missing menstruation indicates that the egg has been fertilised by the sperm.

So, after fertilization, the corpus luteum (formed from the remnant graafian follicle after ovulation) is retained to secrete progesterone which is essential for the maintenance of the endometrium to facilitate further embryonal development and thus menstruation ceases.

But in the absence of fertilization, the corpus luteum degenerates which causes disintegration of the endometrium leading to menstruation.

So, if a woman missed her periods it might be a sign of pregnancy. This is further confirmed by tests.

Sometimes, problems in the reproductive system or hormonal imbalances also leads to missing of menstrual cycle. 


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