It may have been the previous meds that are still causing the issues. The wrong meds/doses can cause a mixed episode or manic episode. It doesn't necessarily change your diagnosis from II to I and either way I don't think it's such a big deal which BP your diagnosed with as long as you're receiving appropriate treatment.

I would suggest letting your pdoc know. If you're having issues with sleep perhaps you require a sleeping pill prescription to take as needed. If you feel unsafe please go to the hospital. I hope you're feeling better soon.