He will be fine, or nursing, or asleep and just start screaming. It's horrible and it sounds like he is hurting but I don't know what it is from. I am able to comfort him but it can take a few minutes. Could it be gas? He is mostly nursed but sometimes takes a formula bottle during the day. Could it be from that? Just want to know if anyone else has experienced this.

Also he is usually very gassy(befor this screaming started) but over the past few days hasn't been like normal.