my stomach and intestines. I have had loose stool/diherria/constipation for 2 or 3 weeks. Nausea mostly after food and on and off migrains. A nurse at my doctors offices said it's probably just a virus over the phone but I am not so sure. at times the pain in my lower intestines in unbearable. I am not pregnant. My doctor has no openings for a month, what should I do and what could it be?