Hi, my name is Melissa and I'm 16. I had just began having chest pains a few weeks ago. I don't remember having any history of hurting my chest. My chest pain happens randomly usually located near the left side of my chest. It hurts to breath deep (like a stabbing pain) but I do anyways, because after-wards the pain is relieved. But that pain seems different from the one I had a few weeks ago, because it wasn't as severe and wouldn't go away by breathing deeply. It didn't last long maybe 5-10 minutes at  most..I started to become worried so I searched on here for help. Also I noticed since after that pain had happened-now when ever I exercise such as doing aerobics at school my whole chest will hurt (mostly in the middle). So can any one help or give suggestions? I'm thinking about going to the doctor if it happens again or continues hurting while exercising.