My son is 11 days old and I think he suffers from acid reflux and gas. I hear it come up and he swallows it back down. And after feeding him he does not burp all the time or it takes a while. He also has trouble pooping sometimes but he does go eventually and its mushy, not diarrhea. He is on Similac Sensitive, and is a month premature so I cant put him on soy I dont think, nor do I want to. Anyone else have any experience with infant acid reflux or digestion issues?