I don't want to minimize the OP's struggles- he most certainly has some kind of mood disorder (possibly rapid-cycling bipolar disorder or RBD). There may be depressive episodes involved, but I don't think the word "depression" should be used unless it's referring to Major Depressive Disorder or one of its close siblings.
Again, I'm trying hard to not be pedantic. It just frustrates me when people think that depression is something you can get over, or that will get better in a day or a week. That's just not the case.