Lactational amenorrhea method (LAM)

Lactational amenorrhea method

Temporary contraception for new mothers whose monthly bleeding has not returned; requires exclusive or full breastfeeding day and night of an infant less than 6 months old

How it works: 
Prevents the release of eggs from the ovaries (ovulation)
Effectiveness to prevent pregnancy: 
99% with correct and consistent use. 98% as commonly used
Comments: 
A temporary family planning method based on the natural effect of breastfeeding on fertility