I got this after delivering my daughter, and had nausea/vomiting and a bad burning
pain in my
stomach, along with weight loss, lack of appetite, etc. Where is it located? Mine was centered in the middle of my stomach, directly under my ribs. Drinking can make this worse, as can certain foods. Do you normally ingest a lot? Seeing as you're underage, you shouldn't be having any form of alcohol anyways.
Does the vomiting have anything in it? Any form of texture?