I hope you find an answer to this. Sorry I don't have one for you; I am not bipolar. But I remember being on meds that made orgasms just impossible & when I finally did reach them....they were small. At the time I didn't put 2&2 together that it was related to meds, but looking back it was a major factor.

I hope you keep trying, even if you don't climax...it's a nice feeling!