Help! My LO will be 4 weeks tomorrow, and for the last two weeks has had horrible gas.

He wakes himself up grunting and straining every time he sleeps which is making us both miserable. He's a horrible burper. We change positions and burp him for like 20 minutes and only *sometimes* get an actual burp out of him.

We're getting pretty desperate. I'm starting to consider trying formula to see if it's an issue with my milk (he's gaining weight like a champ).

Things we've tried already:
Burping
Bicycling his legs
Colic calm
Gas drops
- all of which do basically nothing.

Help!! Any tips or secrets I'm missing? Poor guy is so uncomfortable!