No, not always because if she ovulates right after her period is done and she has a short (say 4 or 5 day period) the sperm can survive in her body for up to 5 days so if she ovulates right after her period those waiting sperm can fertilize the egg and she could get pregnant. Hope this helps. Every woman is different so unless she knows her ovulation schedule I wouldnt take any chances if you don't want a baby. The most unlikely time to get pregnant is right b4 your period but, anything can happen.
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