Thanks so much for all your help everyone, I really appreciate it.

He does have water with his meals, but I dont think he is actually drinking enough, more playing with it. I spoke to our MCHN yesterday, and she got to see him crying & struggling with it and said its definitely not normal as he is in serious pain. So she has suggested 20mls of water 20mins or so before each meal, then if that doesnt help, try parachoc (as I've tried coloxyl and it didnt work). I've got a free flowing sippy cup for him, and what he doesnt finish I give to him from a dropper thingy. Hopefully just the water helps & he is able to go properly in the next couple of days. He has been farting a little today although had to really push them out.

I am so glad to know its not the form his food is in, because he is freaking rocking this BLW thing! He amazes me everytime he eats lol