I have been so sick for over five months!!!!

Someone please help!!!! It all started about six months ago. I kept having intense tingling and numbness all over my body! Which made me go see a neurologist. He immediatley was concerned and did a brain MRI on me! Of course came back normal . We did a bunch of blood tests and my Ana came back positive so he referred me to a rheumotologist to do further testing for lupus etc... She of course found nothing and it was a false positive on my Ana.. Only thing that came back was a slight vitamin d deficiency. I have had nerve testing done and only thing was I had slight carpel tunnel nothing to be overly worried about! For months now I have felt extremely sick. Stuck in bed for weeks at a time! It almost feels like the flu but ten times worse. I'm shaky all the time, can't concentrate my brain always feels foggy. I'm super nauseous, I can't drink alcohol anymore cause it makes me sick since my doctor put me on cymbalta cause he just figures its fibromyalgia. Which is wrong because I'm never really in pain, I just feel deathly ill. I know something is wrong because its not getting better!! I'm so scared that I'm going to die before doctors find out what is wrong with me! I'm going to ask him to do a cat scan just to make sure something more serious isn't going on. I'm at a loss and feel alone. I have had a great life and was never depressed or anxious until now. What could of triggered this?? I can't work when I feel like c**p. It sometimes goes away and I feel fine but always comes back! Any suggestions on what to do? Please help Thank you