Re: First time to this part of Healthboards...
I think the reason your post is not being answered at least in my opinion is the drugs or supplements you were taking or are taking are not common ones we see here. If I were you I would head back to the doctor and get a full workup done including blood work to see if the reason can be nailed down. Your mood cycling so fast does not really seem to fit with depression and without any prior history it sure sounds like a pure medical problem to me
Major Depressive Disorder With Psychotic Features
Post Traumatic Stress Disorder
Borderline Personality Disorder
Generalized Anxiety Disorder