A woman or girl can become pregnant after she experiences her first menstrual period, which will appear between the ages of 8 and 14. In most cases, a woman must have sexual intercourse to become pregnant. A man and woman have sexual intercourse when the man sticks his erect penis into the woman's vagina, friction causes the man to ejaculate and he ejaculates semen into the woman's vagina. If semen drips into the vaginal area or pre-ejaculate is pushed into the vagina, a woman can also be pregnant even if sexual intercourse did not occur.
Immediately after the semen flows into the vagina, sperm cells that are present in the man's semen begin to swim up the woman's vagina, into her fallopian tubes in order to find an egg. Some points in the month, a woman may not have ovulated, so no egg will be present. Other times, no single sperm cell will make its way up into the fallopian tubes before dying. If the egg is present and the sperm makes its way to the egg, the sperm cell must permeate the egg completely in order to fertilize it. Once the egg has been fertilized, a woman will start to experience symptoms of being pregnant.
Options After Fertilization
If you are experiencing early pregnancy symptoms, like tender breasts, morning sickness, fatigue, headaches, dizziness or a combination of these symptoms, go to the doctor or purchase a pregnancy test at your local grocery store or drugstore. The biggest symptom a woman can look for is a missed or late period. Although some women do experience spotting while they are pregnant, these women will not experience a full period. If your pregnancy test has come up positive, you have the choice of raising the baby, putting it up for adoption or getting an abortion. The earlier you catch the pregnancy, the more time you will have to make your decision.