I would definitely say that I tend to worry about my heart. This wasn't always the case and it only began a few months ago. I have, however, suffered from panic and anxiety attacks since I was a kid, so I'm no stranger to heart palpitations. It all began when I (stupidly) tried methamphetamine for the first (and only) time. During that time, I was awake for way too long and I had a very elevated heartbeat the entire time. To say that I felt like I was dying was an understatement. First off, I had been up for 3 days straight. My mind was not functioning well and I was pretty delusional. Now, the thing about meth is, when there is no more, your body reacts in a scary way. Withdrawal includes rapid heart rate, a raise in body temperature, sweating, etc. Since I've had a good deal of experience with panic attacks, my body started to go into flight mode. Not only that, but I felt a huge and intense jolt of energy that shot from the top of my head down out my feet. That triggered one of the worst panic attacks I've ever had in my life. Not only that, my palps were unbelievably intense and my hr was at around 170. This lasted for nearly 12 hours, slowly dropping in intensity. But the entire time I kept staring at my left arm, checking my pulse to make sure I still had one, clenching and un-clenching my fist, and shuddering at any tingling or numbness in my left arm. I kept staring at the bottle of nitroglycerine (my roommate was a CNA so she had lots of medical stuff lying around) thinking when I should take it as I thought I was having a heart attack.
Ever since this episode, my awareness of my heart has never completely gone away. Nothing ever as intense as this initial freak out, but I have heart episodes every week or so it seems. Not to mention, these thoughts have also begun to trigger my panic attacks which I had not had to deal with for maybe a year or so (outside of maybe 2 attacks months before). I take solace in the fact that i can keep telling myself that palps are harmless and that there is no history of heart disease or heart attacks on either side of my family. But still, it freaks me the hell out and usually is the catalyst for an anxiety attack that can lead to the dreaded Google-Fest which only leads to loss of sleep and new reasons to slowly drive myself insane.
Regardless, it's good to get these things off my chest. I don't talk about my anxiety very much...but getting it out (even just on the internet) has calmed me down significantly for the time being. I tend to get stuck in my own head and my thoughts lead to other thoughts that lead to other thoughts and they just gradually get crazier and crazier. Glad I'm not the only one!