There is a method of contraception called The Lactational Amenorrhea Method (LAM). This can be very effective, 98.8%, when used in the right conditions.
It is a well known fact that breastfeeding suppresses a woman's fertility in the early months after delivery. However, many women do not feel comfortable relying on breastfeeding as a form of birth control because they have been told it is unreliable, or perhaps because they know someone who became pregnant while breastfeeding
The Lactational Amenorrhea Method (LAM) was created to allow women to safely rely on breastfeeding as a family planning method. Based on scientific research, the method uses three measures of a woman's fertility:
1) The return of her menstrual period.
When your period returns before six months postpartum, the first cycle is usually infertile. This means that you are unlikely to have ovulated before this period and so can not get pregnant. After six months there is more chance that you ovulate before the first period and if you don?t have a period for about a year then there is a high chance that you ovulated before the first period.
2) The patterns of breastfeeding.
When a baby suckles frequently at the breast it stimulates the nipple, sending signals to the brain, which then releases hormones that interrupt a woman's normal ovulation cycle. This effect is particularly strong in the early months after delivery when the baby is breastfeeding often. We are looking for a baby feeding directly at the breast at least every four hours during the day and at least every six hours at night. All sucking should be done at the breast ? no bottles, no dummies. Some authorities on LAM also suggest sleeping with your baby.
3) the time postpartum.
After six months the reliability of this method decreases ? mainly because you are more likely to ovulate before your first period.
Very few mothers in our western cultures practice this form of breastfeeding and so LAM is not reliable for them. But worldwide LAM prevents more pregnancies than all the other methods of contraception put together.
When you are pumping and feeding breast milk instead of direct breastfeeding the effectiveness of this method reduces from 98.8% down to 75%.
Best wishes,
SARAH