Hi, I had a heart attack about 3.5 months ago and 2 stents placement was done. Another 3 stents were placed one month later for other blocked vessels. I am now on medication for Brilinta, aspirin, Betaloc, isosorbite mononitrate, lipitor & Diovan (valsartan). I still experience slight pains near both sides of chest rib areas for certain times of the day and for certain days. What causes it and what should I do?