I Had A Heart Attack Sept. 21 Of This Year.

I had a heart attack Sept. 21 of this year. My LAD was 100% blocked. I had minimal heart damage and 2 stints. One in the LAD and another stint placed in a an OM Nov.12th. Everything went smooth except I was allergic to plavix and had clot issues during the first stint. My Dr. Corrected the problem within minutes by going back in and opening the clogged stint. Just wanted you to know that. No further problems until this week. I have been working again doing some lifting and running a Tracter. I have had issues with shortness of breath and a very weak feeling coming on and staying with me for 24-36 hours at a time. No sharp pain but just a dull Payne al around my heart area. I usually with rest feel better but this weakness and dull pain has been persistent for 3 days now. I have nitro but have not taken it. I am also on a low dose of two types of blood pressure meds and blood thinner ,Crestor and Zetia, Pepsid. I am in good physical shape,a non smoker,not overweight and no other health issues except fibromyalgia. What do you think could be the cause of my weakness and heart pain?