Hesperian Health Guides
How A Woman Becomes Pregnant
When the man ejaculates (comes, climaxes) in or near the vagina, his sperm leave his penis and can get into the womb and tubes. During the woman’s fertile time, the sperm can join with the woman’s egg. If the sperm fertilizes the egg, it then plants itself in the lining of the woman’s womb. This is pregnancy. Family planning methods prevent pregnancy by keeping sperm out of the vagina, or by stopping a woman’s body from releasing eggs, or by stopping sperm from joining with an egg.