Mostly Pure O

Hello everyone,
Going to try and keep this as short as possible without writing out my life story
7 years ago I was clinically diagnosed with OCD/Depression. It is mostly of an existential/religious type.
This week I made an appointment to meet with a psychiatrist again to discuss possible medication. One thing has been bothering me however; the past week or so I have been paralyzed by the fear that I am bi-polar as I have read that bi-polar tend to have extreme highs, and lows.
Honestly, I do not think I have ever had extreme highs, as my mood is generally depressed, however with Pure-O, ruminating, and following through with compulsions I have found that when I feel the anxiety lift for a bit I feel elated. Not manic (I don't think), just such a sense of relief and I feel GOOD! Normal actually for just a little while.
Even though I was diagnosed years ago, I'm still very uneducated on the subject, as I was lazy and didn't really spend the time I should have learning about it, and how to manage it.
I know that no one here can diagnose me obviously, I am just wondering if this experience is typical of OCD sufferers?
Just worried that I may be prescribed an SSRI and go into a manic state, which I heard can happen if you are bi-polar and prescribed and SSRI w/o a mood stabilizer.

I have OCD and Depression, not Dx'd but still real.

I wondered very vaguely about Bipolar because occasionally my spirits lift (not because of something happy or good, I just feel no worry at all) and I feel almost 'manic'.

I've taken numerous self-tests and have no signs of being bipolar.

I've decided that it's just what people feel like when they're not anxious and depressed all the time? And it only feels slightly manic compared to the way I normally feel.

And so the very rare occasion it hits, I just allow myself to enjoy it, it only lasts for five or ten minutes at a time for me. And then it fades, like coming down off a good beer buzz. Kinda sad.

Snaga,
Thanks for your reply. I know a Doctor will have a better perspective on the matter, but it is comforting to know that others have similar experiences.