Yeah it is totally the gas, I was banded on the 15th, and I'm finally free from it all.
But I can honestly say that the Shoulder pain was just downright painful...
The stomach pain was more like a quick pressure, but the shoulder (left one) was rough.
I didn't take any meds for it, but I really should have....
Trust me though it will go away. Just rub the shoulder and yeah try to get up and move around it helps.