Whenever i drink alcohol, no matter how much or how little, i feel sick. stomach pains and diarrhea. continues next day too. am i allergic?

That's a message!: If you pour alcohol over a cut on your skin, it burns, right? No surprise that if your stomach is inflamed, then pouring alcohol into it will make it burn too. Significant consumption may affect digestion in lots of ways. This is a wonderful time to curtail consumption. Please do yourself the favor & at least cut way back.

Many possibilities: I think to assume the problem stems from inflammation or irritation of the lining of your stomach is a mistake. I would recommend getting to the bottom of this. You are young and there has to be a good explanation. Some causes are hard to pin down. Some people, particularly native americans lack enzymes that properly break down alcohol. Please get a check up including some basic labs.