Three weeks ago I had sharp chest and back pains. I went to the emergency room because I felt like I couldn't breath. They told me it was just stress. I'm 15 years old. Yesterday I threw up 2 times and this morning I woke up with a really bad headaches. Today I started to experience like bubbles popping or fizzing. It is really hard to explain. This sensation I feel all over my stomach and chest. Is it normal?? Can it be harmful??