Pregnancy begins with sexual intercourse. In most cases, this means that a man puts his erect penis into the woman's vagina. Agitation and friction will make the male excited, and he will ejaculate into the woman's vagina. Pregnancy is also possible if the man ejaculates around the vagina and some semen spills into it, or if pre-ejaculate, which contains sperm cells, goes into the vagina. Although there are exceptions, the woman should not be on any kind of birth control, nor should any contraception be used. There are some cases in which contraception may fail, which also may result in pregnancy.
Fertilization must occur in order for a woman to become pregnant. In order for fertilization to happen, semen must be present in the vagina. Live sperm cells exist in the semen, which swim up the vagina and into the fallopian tubes, where an egg may have been released during a woman's menstrual cycle. If there is no egg to fertilize, pregnancy does not happen. If no sperm cells make it up the fallopian tubes in order to fertilize the egg, pregnancy does not occur.
Decisions After Fertilization
After fertilization occurs, the woman may feel faint, weak, hungry for foods she doesn't usually like, bloated or feel no symptoms at all. The most common way women find out they are pregnant is due to a missed period. If you did not have a period this month, contact your doctor or go to the drugstore and purchase a pregnancy kit. If you find yourself pregnant, and you and your partner are unable or unwilling to raise the baby yourselves, your doctor will give you several choices, which include abortion and adoption.