I was diagnosed with total heartblock and had a pacemaker fitted in May. Everything went well but since last week I've felt very unwell. I developed a cough which has got progressively worse and a high temperature of 102. I dont believe its a chest infection but i feel really hot and clammy all the time. My gp said my pulse was quite fast and has put me on antibiotics which haven't helped so far. He also said i had to rest. The cough disappears when i lie down.Im now worried that it is something to do with my heart. Not sure if i should ask for a cardiology referral even if it is to put my mind at rest?