I'm 7 weeks from my surgery. I felt like I was doing really well and my Dr. referred me to Cardiac rehab. For the past 2 weeks I've been having a heavy feeling in my chest, light headed and shortness of breath. Cardio rehab nurse sent me right over to the ER on Wednesday. Spent 6 hours there. They did 2 EKGs and 2 sets of blood work and x-ray. All was OK, no issues. I only have a little fluid in my lung. ER doctor did not feel that this was a problem. Has any one had a similar issue with these symptoms. I have an appointment with my cardiologist next week. Can't go back to rehab till he says ok.