Hello. I am 17 years old and have had anxiety for 3 years. Recently I have been unable to sleep, feeling dizzy all day and also feel nauseous but not actually being sick or fainting. I can't stop crying either because I'm just so scared that I have a series illness like cancer and if you have anxiety you'll understand what I mean. I don't know what to do anymore, I'll do anything to stop having these negative thoughts.