I've had fairly constant premature beats since my bypass 8 weeks ago as I've mentioned here. In the last week I've been dealing with bigger thumps and even pain caused by them. I ended up at A&E again today after getting some quite big thumps and pains but as always they focused on whether I was having a heart attack and once they were sure I wasn't I was sent home as always. Since I was discharged from hospital earlier I've had more thumps etc.. One thing I've noticed since I wear my Fitbit charge HR all the time is that my HR seems to shoot from 55-60 to 100 in a few seconds when I start walking! I don't mean rapid walking, I mean standing up and slowly wandering maybe 20 or 30 meters slowly. Anyone else's HR have such rapid And varied rates? I have managed to get a cardiologist appointment for Saturday but I'm not sure what they can do?