Hi, I suffer from blood clots in the left leg and lung. I am on Innohep blodthinners but have had clots while on the bloodthinners. I keep having horrific pain in either one side or the other side of my chest. It is so bad that I cannot breathe from the pain and I have to go to Emergency to get checked. The last 3 times, it has not been blood clots, but I have to go in anyway because of my history. Now the pain is beyond belief, what could be causing it. I am not puling muscles from exercise, and it does not feel muscular.