I'm 17 and I have had my period for only a year. About two monthes ago, I woke up one morning, got in the shower and had intense, and I mean INTENSE pain everywhere. When I was in the shower, it started that my ears were ringing, and then i couldn't see anything. It was like head rush almost. So I got out of the shower, because I couldn't bear it. I just got out and i had to sit there because it hurt so bad. my legs, bad and arms hurt. My head was spinning and I felt like I was going to throw up. I had to be late for school because it hurt so bad. Does anyone know why this happened? It has happened twice but the first time wasn't bad. I'm scared because I'm not sure if its something serious or not. Please help me!!