Natural methods of contraception are based on believes and scientific facts and are one of the oldest methods to prevent pregnancy. They are popular in couples who wish to have unprotected sex without using modern day contraception like condoms and pills. They are effective up to some extent but are not highly reliable. One shouldn’t be fully depended on them.
Natural methods of contraception include:

• Coitus Interruptus: This method involves withdrawing the penis just before ejaculation of sperm into the vagina. It is effective only if the male partner pulls out at the right time otherwise the semen will leak into the uterus. It also dampens sexual pleasure.
• Rhythm Method: This is based on calculating the ovulation time in females. It is a known fact that ovulation takes place 2 weeks before the menstruation and therefore, a safe period can be identified when there is no ovulation and when chances of getting pregnant are low. As menstrual cycles of women can be irregular and are not always on time therefore the risks are high.
• Observing Cervical Mucus: By feeling the thickness of vaginal mucus the fertile and non fertile period can be recognized in women. Non
  fertile days are safe for unprotected sex.