I Had My Gallbladder Removed July 30th..since Then I Have

I had my gallbladder removed July 30th..since then I have cut out fried foods for they hurt my stomach..and up until recently have been doing fairly well. However the last 2 weeks, I have thrown up 3 to 4 times each week. My stomach starts hurting in the evening, and hurts so bad I can't sleep until I finally get to the point where I can throw up. Should I go back to the doctor concerning this? Most of the time I have noticed a strong "acid" smell when vomiting. I'm tired of my stomach hurting and vomiting.. please help.