don't know what to do, going crazy

i've been a hypochondriac since i could remember. when i was just 10 a neighbor of mine had a heart attack and i was so scared that i was going to have one as well. i would obsess about it, monitoring my breathing all the time, swearing that i was out of breath. Imagining a pain shooting through my arm. I also self diagnosed myself with all kinds of cancers. This problem has only gotten worst. I am now 20, and right now am currently obsessing with the idea of going blind and deaf. I sit online and search anything I can find and make things worse. I have been to an eye doctor and am now making an appointment to see and ear doctor. I have been to quite a few concerts and now have vowed to go to no other. I feel my ears are clogged up and are going to fail. I am petrified and don't know what to do. I know I can't live like this, fearing the worst thing all the time. I always promise myself that once i get over one obsession that i will be happy and everything will be ok, but i always manage to find something else wrong with me. please respond if you feel you can help. Thanks so much!

I used to look so much crap online too, mostly about the heart since I was convinced I had a heart problem. When I was 10 I couldn't watch "Rescue 911" on tv or I'd manifest every symptom on there, hahaha. I'm sorry you're going through this being so young, I know what it's like (I'm 21). Luckily I've been fine for the last few years as far as thinking I have a real physical disease - I realize that I only have anxiety and that I have to control it. You know you don't have anything that you dream up, don't let it control you. Good luck

i hope this help. i completely feel the same way. i need help! im only 20 and healthy but think my heart is going to stop . it started about 5 months ago, randomly. at first, it was only at night. now, it's during the day also. it's constant. and what's worse is that i feel like i'm crazy because i KNOW that it's ridiculous and that i'm healthy, but i STILL have no control over my own thoughts. it's OCD or something. it's gotten so bad that i can't sleep on my left side at night, or sleep at all for that matter. i think about it so much that now i can actually feel my heart, probably from the anxiety and that just makes it 10 times worse. its completely paralyzing.