Hi there...I can understand your concern for your sister. It is normal for menstrual cycles to become irregular after taking drugs like ipill. As they contain high doses of hormones like progesterone, they will alter the menstrual cycles temporarily. It will normalise after few months. Ask her not to worry too much. If it's still irregular after few months, consult a gynaecologist for further evaluation.
Answered2016-07-28 03:35:38
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