About a month or so ago I started experiencing several stomach pain, diarrhea, disgusting burps, & nausea. It only occurs about an hour after I eat but last for many hours to come. No fever is present nor is vomiting. I've tried over the counter medicine, such as, Pepto Mismol, Zantac, etc. Any suggestions on what's going on? Gall bladder? I'm stumped & work 60+ hours a week so its hard for me to get into the doctor.