Hello and welcome to PC.
It's a tricky diagnosis to figure out especially since there are several different divisions of Bipolar. I was initially diagnosed with a simple anxiety disorder and placed on Prozac to help the anxiety. I went hypomanic on every SSRI/SNRI he placed me on. We eventually realized it was more than anxiety with depression mixed in. So he dxed me with a Mood Disorder, my therapist dxed me Bipolar 2 with severe anxiety mixed in. I don't know if that is in the DSM-5 or not, but that's what i've gone with.
I guess my best suggestion is to trust your doctor and not rely on diagnosis's. You'll probably try a lot of medication and get very frustrated but you'll eventually find the right combo and feel better than you have in years. I would also suggest reading about the side effects.
I wish you the best of luck.