Well I have just got back home from A&E. I have had palpitations since April but today had sharp twinges lasting max 2 seconds each time. Dr said ECG showed some changes t wave inversion on leads avr v1 v2 v3 but he wasn't concerned as it was probably normal for me and with my symptoms he wasn't worried. But now I am so scared I don't know what to do with myself as I've stupidly googled t wave inversions. Has anyone else experienced this? :(