I am a 47yo male, I had 4 hearts placed in 10/06 they put me on p...

I am a 47yo male, I had 4 hearts placed in 10/06 they put me on plavix and lipitor 40mg. I exercised daily- cycled 40 miles a day, I can not do that now. I have bad back pain and chest pain (plavix) the cardiologist did a second stress test in 12/06 and it was clean, the lipitor and plavix are the issue and at this point I have no choice other than to live with it or take the risk of clotting these medicated stents.....any thoughts please let me know.