My son has had severe silent reflux and constipation since birth has been dairy free since 3 minths with not much improvements we went to see a gastro yesterday who looked at my sons history of in and out of hospital constant blue episodes through reflux and explained he needs these things done urgently he also has a primary immune deficiensey so she said because of the immune problems it could be an undiagnosed allergy causing motility issues and all his probs all the things are gonna be done on the same day under ga. Im very worried about all of this so any experiences anyones had I would love to hear? But im also curious to know what could be the allergy if it started before weaning and he was formula fed?