I have a similar situation, diagnosed after an SSRI reaction, questioning it, and also pretty sure I have OCD according to discussions with my therapist/psychiatrist. Thing is for me, my therapist also says she doesn't see bipolar which further make me question the diagnosis. I do have mood changes with seasons, hormones, just randomly. I just don't think I really get to the level of mania/hypomania without meds. Do you think you have had mania/hypomania since the med reaction? You could always get another opinion if you have not already. Does the bipolar treatment such as mood stabilizers help you? Treatment that works might be more important than the diagnosis, but the right diagnosis does help us to know what's going on in our brains and find the right treatment.