Avoid chances of ovum and sperms meeting. It includes 1.. Periodic abstinence: Avoid coitus from day 10 to 17 of the menstrual cycle (fertile period) to prevent conception. 2.Coitus interruptus (withdrawal): Withdraw penis from the vagina just before ejaculation to avoid insemination. 3.Lactational amenorrhea: It is the prevention of conception by breastfeeding the child. Ovulation and the cycle do not occur during the period of lactation. It has no side effect. This is effective up to 6 months following parturition. Chances of failure of this method are high.
