Modern contraception methods have proved their worth and usefulness in preventing pregnancy. Their effectiveness has been well tested and they are being constantly used by couples. There are both natural and manmade means of preventing pregnancy.
Natural means of preventing pregnancy includes:

• Preventing sex during ovulation period.
• Preventing sex during wet period and having sex during dry period based on thickness of vaginal mucus.
• Withdrawing of penis just before sperm release into the vagina.

These methods are effective up to some extent but are not highly reliable.
Modern Day Contraceptive tools available to prevent pregnancy:

• Condoms worn on penis to prevent sperm flowing into the vagina.
• Contraceptive pills, taken after sexual intercourse to prevent pregnancy.
• Contraceptive injections lowers sperm count in men.
• Diaphragms worn by women to cover their vagina and uterus in such a way that prevent entry of semen into the uterus.
• IUD or intrauterine device inserted into uterus of women and prevent pregnancy for 5 to 10 years.

Most of these methods are 99%