Coitus Interruptus: Coitus interruptus means 'interrupted sex" (penis is withdrawn from the vagina just before ejaculation). 

Advantage - method does not require the use of any drug, does not interfere with normal body functions. The failure rate is high at 15 - 18%. 

Periodic Abstinence: couples avoid or abstain from coitus from day 10 to 17 of the menstrual cycle when ovulation could be expected. 

Lactational Amenorrhea : (absence of menstruation) During intense lactation, chance of conception are almost nil but effective upto 6 month after parturition.

Barrier methods: In barrier methods of birth control, a barrier is placed between the penis and the vagina during intercourse so that the sperm cannot meet the ovum for fertilization.

• Male Condoms:, usually made of latex that covers the erect penis during penetration of the vagina.
• Female Condoms: made of polyurethrane, loose sheath with two rings on either side. can be inserted about 8 hours prior to sexual intercourse and can be kept in for about another 12 hours after intercourse. Can be used more than once during this period.