Question

what happen when date misses while mensuration time.

Answer 1

that is called menstrual disorder one should for for treatment

Answer 2

Missed or late periods happen for many reasons other than pregnancy. Common causes can range from hormonal imbalances to serious medical conditions. There are also two times in a woman's life when it's totally normal for her period to be irregular: when it first begins, and when menopause starts.
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Hope this well help you