How long is a period: Hi Diane, It is difficult to answer this question. Women conceive 14 days before their next period. This is very consistent whether a cycle is 21 or 35 days. Start counting from the 1st day you bleed. This is Cycle Day 1. On cycle day 14- 15 generally, you will ovulate. This is prime time for fertility and pregnancy.
Answered 1/28/2015
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