It sounds like you're really suffering Gaz. Hang in there, maybe the next thing they try will be the one that works. I know you're frustrated. It's so difficult to feel like a guinea pig. They try drug after drug with no success, but perhaps this next Dr. will finally come upon a solution, the relief you've been searching for.
My phases usually run the opposite of what you're experiencing. I stay up more often than not. My "ups" aren't really the positive experience alot of people envision bipolar hypomania to be. Yes I become very active, and unrealisticly upbeat in the beginning, but that soon deteriorates into irritability, anxiety, and paranoia.
I sure hope you're feeling better soon. You'll be in my thoughts and prayers
God Bless and Take Care
Good judgement comes from experience and alot of that comes from bad judgement.