Need sone advice ladies. My newborn cries to eat i give him a bottle he cries while eating. I was thinking thats its his stomach. I also give him drops for gas and colic which seems ro work sometimes. No constipation I switched from similac pro advance to similac sensitive still no change. I thought it could be bottles because he is using only similac 2 oz bottles he wont use any other i donno what could it be . Any suggestions ideas?