I Am A 50 Year Old Female. No Health Problems

I am a 50 year old female. No health problems except 50lbs over weight. I am experiencing sudden, short bursts of pain in my chest by my right breast. I was sleeping in a weird position so I am not sure if I strained something or if I should be concerned. I am not out of breathe, sweating, nauseous, or any of the other normal heart attack symptoms. But the pain has occurred at least 6 times now in the past 10 minutes.