This is a trip to the doctor, as soon as possible. They are the ones that will help you,hopefully. When it's a physiological issue or even psych. problems. That may be serious. We can offer our 2 cents in a peer group setting but our anecdotal or take a swing at at it. Isn't the best way to figure out the problem.

You are taking three meds that are in different classes-NDRI, Lithium-mood stabilizer and Seroquel. Which is an AAP. Also the amount you take of these meds. are very important. Example being, some use Seroquel in low doses for sleep and start going up:
Quetiapine Reviews & Ratings at Drugs.com
Lithium for psych - Search results. Page 1 of about 606450 results
Wellbutrin - Search results. Page 1 of about 6359 results

Plus you have to add in not only what it is for but if it is instant or extended release (Wellbutrin). Please go to the the health provider or providers that are helping you!