i just turned 15 and i have always had generalized anxiety. in the past 6 or so months, it rapidly got worse. I had one of the worst panic attacks ive ever had and it gave me chest pain for the entire week after. the whole time i was worried something more serious was wrong. the anxiety from that worrying just worsened my physical symptoms. 

a month or so after i was under a lot of stress over family and school problems, i had another attack(?) or something where my chest was burning for hours and i went to the hospital because it got so bad. i was completely convinced i had a heart disease but when i took an EKG, blood tests, and X-rays, everything was fine. even after, i couldnt believe it and though the doctors are missing something. my symptoms continued, along with many other new things. i started taking tylenol and sleeping pills in the middle of the day to calm my anxiety. eventually i stopped because i realized prolonged tylenol use is horrible for you and i already constantly think my major arteries are failing.

My addiction to googling my symptoms and checking my body is starting to ruin my
life. im always aware of every little sensation and new mark on my body at all times. im exhausted.. im scared of dying but also of living like this. i feel like im waiting for my impending doom and its constantly a thought in my mind. no matter how many times i go back to the doctors with a new list of symptoms and insist theyre missing something, everything comed back positive. people always tell me its in my head and i acknowledge it most likely is, but the fear that hypochondria and an actual disease can councide overtakes that thought. im not sure what to do, i feel like if i keep going like this, and a real sickness or cancer doesnt kill me, ill get too tired of it and do it myself.