I've had health anxiety for 18 years really thought I had cracked it in the last 3 years after CBT then I get a fast heart beat in the night and its back with an absolute vengeance. My cholesterol is high and the dr thinks my fast heart beats could be svp my anxiety is absolutely through the roof I feel sick with it and starting to struggle to function. Increase my anti depressants but not convinced they will help. Had enough of living like this don't feel it will ever ever end.