My son is 5 weeks old and from 2 weeks old he started to really grunt and moan generally after feeding. He doesnt cry to much just sometimes when he feeds he looks like he is trying to squeeze out a poo but doesnt. He struggles to get burps out so started using infacol which didnt make much difference. So trying colief past 2 days and he has gone from doing 1 poo a day to poo after each feed which he ends up getting a sore bum. Has anyone else had this experience? He doesnt seem to be grunting and moaning as much but does get distressed still when trying to get the poo/wind out. He uses aptamil and MAM anticolic bottles. Im not sure if its just his body getting used to everything or should I stop using colief and maybe just change formula?