Woman
Between the end of  puberty and  menopause, a woman can become pregnant. Women go through puberty usually when they are between ten and sixteen years old. The menopause usually starts in the late forties, and ends in the early fifties. Between these ages, women go through a menstrual cycle, once a month. If such a woman has sex with a man, at the right time of the month, and no contraception is used, the woman may get pregnant.