What Causes Migraines, Joint Pain, Convulsions, Fatigue And Sleeplessness?

I am worried about my health. I have been sick for the past two months or so ranging in degrees of severity. Two weeks ago I was in the hospital and now I am forcing myself to go back to work. I went to the hospital from debilitating migraines and severe light sensitivity. I was feeling very naseous before that. After te migraines I suffered from delayed speech and motor skills. My cat scan and MRI were fine. I was put on progesterone for migraines and tha tis when the body pain started. I have severe join pain, and back pain that feels like I just had a very serious workout. For two days my body was suffering from confulsions. I am better, but still feel like I have the flu but have no temp. The body pain has not stopped, and the headaches are less severe but still there. I cannot sleep at all, but am tired all day. I had a lot of blood work done and the other things said was positive for EBV and low thyroid. Could this possibly be mono?