Not that we are the same, but I was diagnosed with bipolar for years, when the issue I had was switching personalities. I would be so hyper sometimes that people would tell me I was a whole different person, and the switches were so fast I was labelled as having rapid cycling. What was actually happening was that I would dissociate to different personalities, even though they all answered to my name and I never lost time. Some people have both, but it is also possible to be misdiagnosed as well. Again, just my experience.
Dissociation sounds like it is something that is happening with you, and I would try and be honest with your treatment providers. I was wrongly medicated for years because the doctors trusted the first diagnosis, and didn't do any further investigation until the last two years. There is a difference between switching between personalities that have different mood, energy and affect levels, and becoming depressed and/or (hypo)manic. It takes someone knowledgeable in trauma and dissociation to help you weed through that, though.
It might help to print out what you have written and bring it into your doctor or therapist and see what they have to say.

good luck,
IJ