I do agree that having a diagnosis isnt going to help things. But what you do need is to know that others have been where you are and understand where you are at. If you know that, then you wont need any justification of a diagnosis.

Like they say, just get in where you fit in. We don't need a label to know what group seems comfortable to us. You've stated you did your research. Continue to do so and find out where you feel right at. Do your best to get treatment. If one person wont listen, there are others that will.

Having a diagnosis wont make anything easier. It does give that peace of mind that someone finally agrees that there is something going on, "I'm not crazy"
That just has to bring you through the social stigma others place on those scary mental health words like "Bipolar" or "Mania" or "Psychosis"