Last year I had my first full blown panic attack after having a bad reaction to hash brownies. I have always dealt with anxiety my whole life but this was on a different level. I was fully convinced I was dying which led me to call an ambulance who came and checked me out and they left once I had calmed down. The next day I woke up and had a constant squeezing pressure on the left side of my chest. My first reaction was to go onto google and type in my symptoms which led me into a vicous cycle of convincing myself I had a serious problem like a heart problem. I had this pressure in my chest last up to a month I would say and it motivated me to start eating healthier and excersizing more regularly. since changing up my lifestyle things improved a lot and I was no longer anxious about things and could live my life a lot more freely, but after this incident whenever i would hear or read about anyone having a heart attack it would make me think about that chest pressure I was feeling, and it would lead me worrying about it again. Fast forward to last week (over a year down the line) , I had a minor panic attack in the evening which was caused by me stupidly smoking a tiny bit of hash. I felt my heart rate rising from it which led me to start panicing and causing me to have a minor panic attack which was nowhere near as bad as the first one I had, yet it was still uncomfortable for me. I couldnt lay down, i was feeling nauseous and was sweating. The next morning I woke up and the chest pressure/tightness had returned which has caused me to constantly think about this feeling in my chest, and being worried about heart related problems. When I am busy though, out with my friends, or keeping my mind occupied the chest tightness dissapears. it seems to be at its worse when I am by myself, with nothing but my thoughts. I was wondering if it is normal to experience this chest squeezing/tightness sensation after a panic attack, and feeling it and getting anxious about it. Could it be something more serious and I should get checked out? or is it completely anxiety related and I just need to keep my mind off of it?