WHY THERE IS NO MENSTRUAL CYCLE DURING PREGNANCY????????????????????????????????????
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estrogen and progesterone causes the womb lining to thicken while progesterone prepare the womb for the implementation of an egg
if no sperm fertilizes the egg, pregnancy does not occur and it dissolves the level of estrogen and progesterone decline and the womb lining falls away....
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Mai bhii Mst xD
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