Back in December I was diagnosed with pericarditis- I had echos, heart imagine, stress test, chest xrays, heart scan, and blood work- aside from the pericarditis everything was okay- some scar tissue did form after the inflammation had cleared up. In May I started having chest pains and shortness of breath and bad fatigue. I had another Echo done and the doctor said it looked okay but he wants to do a heart cathether. I'm a little worried it might be Congestive Heart Failure. I'm 29, have no history of heart disease. I do have low good cholesterol but my bad cholesterol is normal. I guess my question is with all the tests I've had that have been normal, is the doctor being thorough or is there a possibility of heart failure?