What is wrong with me?

I woke up Wednesday morning at 3. Well more of was jolted out of my sleep. And everytime I tried to go back to sleep I would get this anxious feeling and I'd immediately wake back up. I also have some numbness in my left eing and pinky finget and I have some pain in the respective shoulder blade. Sometimes I have an anxious feeling and I can't be alone for too long or I start thinking I an having a heart attack. Idk what's wrong with me. Also it seems to get bad when I am about to sleep or am alone. Sometimes I think the numbness goes down my leg too but idk. They say it is probably a pinched nerve but I really just am scared and I am afraid to go to medical because people have been kicked out of the military for anxiety and I don't want that.