If your religious beliefs preclude you from using one of our already discussed methods, you can turn to natural methods; these are useful in predicting when you are fertile.
The rhythm method involves figuring out when your body is most likely to get pregnant and then avoiding sex during those times. You can do this by taking your temperature in the morning (your temperature goes up during ovulation), examining your cervical mucus and charting your periods on a calendar. Although the rhythm method is a good predictor of ovulation, "good" does not equal "great," especially for women whose menstrual cycles aren't predictable. Furthermore, sperm can live in the body for up to 7 days, and therefore, practicing a natural method perfectly means that you will have to abstain from sex for 10 days or more during every menstrual cycle.
Withdrawal is exactly what it sounds like: When the man feels that he is about to ejaculate, he pulls himself out of the woman, so the semen doesn't enter the vagina. Withdrawal should not be used as a sole form of birth control.
Abstinence is the only form of natural birth control that works 100 percent. Abstinence simply means you don't have sex at all.
