Just over 3 months ago my father past away and I really didn't have people to talk to because all my friends were worried that I would be offended if we talked about it. Just over a month later I was sitting at my computer and I started to sweat and my heart was beating fast and I was terrified the next day I woke up and I was exhausted and I was short of breath this continued for 3 days until I pretty much realized what it was I self-diagnosed myself with mild anemia which stemmed because of caffeine I drank the morning of the day this happened. A couple of weeks later I have coffee again and the same thing happens when I eat some iron-rich foods and I'm fine. Recently like a week or 2 ago I've had a noticeable heartbeat and a very anxious feeling also being exhausted however all this goes away when I'm walking around or talking with friends or playing video games or exercising but when I'm by myself I spiral into dark thoughts of what could be happening to me when I eventually look up symptoms and see things it possibly could be which makes it much worse. However recently through this entire thing, I've had a massive fear of Heart attacks or Hearts, in general, this might be because when we first lost my father we originally thought it was a heart attack however we then found out it was nothing of the sort. anyway, I'm curious if this is an actual thing I looked up cardiophobia and what came up were my exact symptoms. I am going to the doctor in 6 days for a checkup so im just curious. (sorry for poor punctuation and grammar I'm writing this quickly.)