I had a bypass x2 in June 2018. Recovery slower due to complications with wound and retained temporary pacing wire removal in Oct. I’m a worrier so that doesn’t help but just wanting reassurance that although I’m told I’m ‘fixed’ the cold weather can still affect you, tried running yesterday late for appt but was breathless after couple of minutes (could never run years before op and prior to diagnosis of angina). I then went on brisk 1km walk with hill had very slight chest pain at the end of Walk. Am I just pushing myself too much especially in cold weather? I’ve been doing running 4Km on spot indoors in 32 mins without any problems.