A little over a month ago I was wrestling in my Brazilian Jiu Jitsu class and with my right arm extended i tryed to push my partner over top of me. I felt like i pulled something in my ribcage underneath my chest about 3 inchs under my armpit. I also lift weight almost everyday, and i continued to train, the pain was very rare and not very serious. Today in class the pain became worse, and has become a bit uncomfortable again, much like when i first injured it. Im not sure if it is a muscle injury or a bruise too my ribs or soemthing else. When i take a deep breath it hurts more as if something was pushing up against my ribs.