My stomach is a angry bird!!!
try drinking things at a different temperature... a lil warmer or colder than your normal drink and see if that provides you any relief.... for a while I couldnt handle hot drinks, then I couldnt handle ice cold drinks.... now I can handle both... Also your stomach is still healing so it is sensitive...
good luck
Warm or hot always and still works better for me. To get a warm or hot drink without the protein clumping - dissolve the protein completely in cool/cold water - COMPLETELY! So that it pours like cream. Then heat up whatever you're mixing it into - milk, water, coffee - and pour the dissolved protein into it. Stir like crazy. Once it's dissolved, I've even been able to re-heat the drink with the protein in it without a problem.
Try Click! protein. It's made to be hot. Same thing with the Unjury chicken soup protein powder.
It WILL get better. Your tummy is just swollen and angry right now.