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If your periods are regular, then based on the menstrual cycles, your probable ovulation days can be calculated. If your last period began on Feb 24th, and your cycles are of 30 days, then your probable ovulation days would lie between March 3rd to March 13th. The chances of pregnancy are higher during the fertile days or probable days of ovulation (egg release from ovary). The exact confirmation however can only be done after a Paternity test.
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