Don't be discouraged. My son-in-law takes exercises very seriously.. he rows and uses the Pelaton. He had afib for years and had a couple of ablations. Finally, he found a cardiologist in Texas who found that there was a genetic issue that other cardiologists in CA (where we live) did not see. He had an operation and he does not have afib anymore. Actually this Texas cardiologist told him he can go back to his exercise routine the week after the operation. He is no longer on any meds. I had a TSI and now my cardiologist is testing me for afib. I had a loop implant. I'm glad I found this forum. My daughter knows alot about afib because of her husband's experience and she's a comfort. I'm blessed. I have a family history of strokes so I eat very clean, do not smoke or drink and I am not overweight. I can only walk everyday because of my back problems resulting from a horrific car accident when a car ran a light and hit my car. I hope you can be positive and know that you will get better! A second opinion is a good thing.