I'm suffering from severe health anxiety that I can't tell what's real and what's in my head anymore. It's killing me. My heart palpitations are constant and I can't sleep. I'm not myself around anybody. I want to be alone yet when I'm alone it's worse. I don't know how to get through this. Xanax does not seem to be working. I take one and my heart palpitations dull for a few minutes then a bad thought will pop into my head and I'll be back to square one. I don't know what to do. I can't go on like this.