I went through something like this a few weeks ago. My anxiety about V* was getting out of control to the point where I felt lightheaded all the time.. plus I had a bit of a sinus infection. I was so anxious about all of this that I was hardly sleeping and barely ate for 3 days straight. This was making my lightheartedness worse. I was also getting dehydrated from barely drinking water. I thought I was going crazy. I could not sit still. All I could think about was being sick to my stomach or passing out- back and forth back and forth. I eventually went to the doctor and he diagnosed a sinus thing. Once I wrapped my mind around the fact that I had a sinus infection and the rest was anxiety I was able to relax. Gradually my appetite came back and I was back to eating like normal. I still get my little anxiety spells but they pass eventually and I am hungry again. It just takes time- nothing last forever! Feel better soon!!!