NO, I am 5 weeks out with RNY and NO cramps except when constipated. I would speak to your doc immediately, maybe you have adhesions or slight obstruction.
What is your diet like? I still get diarrhea but usually if I eat or drink something that I'm not supposed to have. I haven't had my gallbladder out yet. The only stomach pains or cramping I get is when I get too much intestinal gas, but once I take several gas x strips it usually subsides.