I was misdiagnosed unipolar depression too and antidepressants did do terrible things for me. I felt worse for awhile, big deal. What I mean is if it is bipolar that will be discovered eventually. The only thing the op can do is play along with the experimenting because even if it is bipolar there is going to be a lot of playing around for the meds, dosages and the side effects... or forget psychiatry all together.