Fibromyalgia Symptoms HOME

I was recently lifting some items, some heavier than most. I went to bend over and felt a my first chest pain discomfort. No problem breathing, no pain in left side of arm. I have also noticed this pain if I am looking over my shoulder while in traffic to change lanes. I am at a computer about 12 hours a day. I am about 6"3 280 lbs. I had a physical a year ago cholesteral level is 170 and no high blood pressure and had a echocardio gram done which was normal. I am wondering if I may have pulled a chest muscle. This has happened before and cleared up after a few aspirns. I took a few last evening and laid down and felt fine. Curious: