A woman ovulates around 42 days after giving birth, depending on her body type. Most women will have their period 42 days after delivery and may ovulate anytime after the puerperium. Some women do not have menstrual periods until 42 days after delivery, or even 10 months after delivery or after breastfeeding, and may ovulate irregularly even without menstruation. The probability of ovulation is around 15% at 6 weeks postpartum and around 30% at 3 months postpartum, while breastfeeding women ovulate relatively late, somewhat 12-18 months before ovulation begins. Ovulation time is also affected by maternal age and obesity, especially women over the age of 34 or obese women, their ovulation time is delayed, during this period to do the appropriate contraceptive measures to avoid unwanted pregnancy, do not recommend that women get pregnant within 12 months after delivery, for the uterus is more harmful.