LITERATURE REVIEW THE EFFECT OF THE USE OF PROGESTIN INJECTING CONTRACEPTION ON THE FOLLOWING OF BREAST MILK IN BRESTFEEDING MOTHERS Sarah Nuari, Nurbaiti 2 3 , Ratna Dewi ABSTRACT Background : The benefits od brestfeeding are very large but not all mothers can breastfeeding their babies because various factors can inhibit breastfeeding, one of which is insufficien mil…