it is told that when fertilisation do not occur women will menstruate...but how fertilisation occur in a teenage girl as their is no transfer of sperm...... answer fast.... don't spam
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Fertilization doesn't always occur, even if you ovulate
If you ovulate and a sperm cell doesn't successfully fertilize the egg, the egg will simply move down the fallopian tube, through the uterus, and out through the vagina. ... There are a number of reasons why fertilization might not happen
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