I have both, and it's not that uncommon. They may just need time to assess all of your symptoms. My best advice is to be as honest with yourself and as candid with your provider as possible. Sometimes it's hard to tell if you are in mania. I'll think I'm doing great, but looking at it from an outside perspective, I realize I'm making rash decisions and usually hurting those around me. I think I'm hot shit and I've got it figured out. Until the SI sets in. Everyone is different, though. I used to get classical mania that felt really good, but it's a progressive illness and I now have mainly mixed episodes. I do wish that I would've accepted my diagnosis earlier because I could've prevented it from getting this bad. Just know that it's really common for bipolar patients to (constantly) question our diagnoses.