More and more recently I've started getting what I can only describe as 'twinges' in my heart area... I guess they're not painful as such but it feels sharp... sorry I can't describe it. When I first started having panic attacks a few weeks back I had an ECG and was told my heart was fine but I still think I have something wrong with my heart and can't explain these twinges. It actually woke me up the other morning... This is my main worry at the moment. I haven't had a full blown panic attack in ages now but I'm constantly on edge and often get sharp headaches in my temple. Is this just part of anxiety?