Severe Moods

So I want to start off by saying that I do not have Clinical Depression, and I'm sorry to anyone who may be offended that I am considering myself depressed. Yes I know how you feel, I do have real OCD and hate it when people say they have OCD because they want to wash their hands.

But I'm not sure of anywhere else where I can ask this question, seeing as one of you may have some knowledge of depression or "the blues" as opposed to full on depression, or at least one of you may know something about what happens.

So I have had this problem for a long time, about since puberty. It is pretty bad. It usually starts with an extreme emotion that is so powerful it drills me till I fall into deep depression. I usually feel angry, sad, happy, joyful, so much to the point where I have a total mental collapse.