My gestational diabetes has developed into a severe type 2 after the delivery and I'm now on metformin 2g a day. I'm also breastfeeding. I'm wondering if there are any other mums who are/were taking it while bf and what effect did it have on your baby? My diabetic nurse says it's safe but the small amount goes into breastmilk and it can make baby very hungry. it got me extremely worried. Does it mean my baby is having his blood sugars constantly being lowered? It can't be good can it? Please someone share your experiences and opinions.