i went to the gym two months ago and was working on an ab machine.  i was trying to do 100 reps when i felt a sharp stabbing pain. kinda like a severe charlie horse.  it was under my right breast in my rib cage area.  this happened twice.  i have not been to the gym since and last week i started have severe pain in the same area.  it hurts when i move and especially when i touch it.  what is this?  i have taken motrin and tylenol but neither helps.  what can i do? i may also need to let you know i have been diagnosed with fibromyalga.
Welcome to Chat Doctor .please go for chest X-ray pa view to rule out the bony injury .as per history it is muscle strain.u need painkillers as diclofenac two times and serratiopeptidase two times ...