For the past four months i have been chronically lightheaded & lethargic, with vertigo a couple times a day. I feel my pulse in my head at least once every 5 minutes, and sometimes have a hard time focusing on objects. It's gotten to the point where i'm too scared to go outside by myself, and i quit my job. I was fainting, or coming close to fainting very often and couldn't handle it. I have vitamins almost everyday, but I don't eat very well. My anxiety causes me to have difficulty eating because my stomach is upset a lot of the time, but I am not having a dramatic weight loss. I've tried to stop smoking marijuana for two weeks to see if it was the cause, but my symptoms remained. I also have really bad night sweats almost every night. My doctor tests my blood sugar regularily, and would probably tell me if I were at risk for diabetes. My life has been put on hold because of this, and it's increasing my anxiety, any leads or suggestions would be appreciated.