My stomach is hard i have pain sometimes upset stomach sometimes when i poop it's watery when i eat i feel sick what could it be?

Nondiagnostic: These symptoms are nonspecific but could be due to the irritable bowel syndrome where both diarrhea and constipation often occur. Other possibilities include lactose intolerance, or gluten sensitivity. A gastroenterologist is best qualified to evaluate,advise and treat you. Appropriate tests will be ordered and dietary advice given.