M.C.
Sounds like colic to me. If the meds the doc prescribed for the reflux are not working, take him off of it. You would notice a change if this was a correct diagnosis. My 1st had terrible colic for 7 months. That's right, 7 MONTHS. I wanted to run screaming into the night. The only thing that worked for him was putting him the swing to sleep. We called it the "magical swing" because it worked and we could sleep so mission accomplished. He took naps in it but at night what we would do is have him fall asleep in it and then transfer him to his crib after he was in a good solid deep sleep. It was honestly the only thing we could do for him aside from being up all day and night walking/bouncing him. Best wishes to you. I know it's very difficult but you will get through it.