Basically, I had what I guess would be panic attack about 6 weeks ago after taking something I shouldn't have (I know I know, I don't plan on doing it again!). I had palpitations that felt like my heart was going to explode and intense shaking, although I felt it had more to do with my mind, thinking/worrying about my ex etc. since thats what actually kicked it off. I never actually got any sort of real diagnosis from the hospital or from any follow ups at my GP after having further tests, though the problem hasn't exactly fully gone away. I have now discovered that any substance including alcohol (over say a couple of pints) causes me to suffer a milder form of the original attack. However, what is more frustrating is that sometimes even when I'm not doing anything, I start to feel uncomfortable feelings in my heart region and of course the more I think about it which I find it impossible not to, the worse they get. In the last 2 weeks my bpm has been mostly around 85 which isn't all that bad but I use to be more like 60-65 being quite fit and healthy physically. I have shortness of breath sometimes too. Over the past two weeks I've had two episodes which I needed someone to calm me down and help me and a handful of uncomfortable periods. For instance today, this morning I felt brilliant, and this afternoon it just started to feel uncomfortable for apparently no reason. It seems just as I think it's getting better it happens again. I think I managed 3 days in a row of not having any problems. To be honest I am a very anxious person generally who is often accused of analysing and over thinking things and being 'too deep' about things that in the grand scheme of things really don't matter. I just find it a bit odd and unnerving that these things are happening when I am pretty my relaxed as far as I see it. I guess my question is, is this anxiety or is this perhaps something physical like a heart problem of which I have actually damaged my heart or something along those lines?