Diaper rash

Ashley

My LO, 9 days old.. has had a rash since he was 3 days old. Nothing seems to be helping! I have tried Desitin and Vaseline and the aquaphore that is pretty much just Vaseline. I change his diaper before we nurse and after we nurse and anytime I hear him poop.... never go more then 2.5hours between changes. Any advice?