I have afib and lately been having episodes of palpitations unable to catch my breath. i went to the er and they say tests are norm. should i worry?

Maybe: Untreated a fib. Increases your risk for stroke. Recurrent episodes are problematic and you may need a beta-blocker to control better. You may alos need Aspirin or other blood-thinner. Also avoid alcohol and caffeine completely as they can trigger episodes. At 61, a fib should be under the care of a physician. There is a procedure called ablation that often can cure. Speak to your doctor.