Why am I so desperate for a label?

In September I was diagnosed with BPD and at the time I was overjoyed to finally have a 'label' after years of trying to get any kind of diagnosis but the more research I do and the more I read stories and stuff on here the less I relate and I'm seriously considering whether the diagnosis is actually correct. I don't like to admit this because it looks like I just want a disorder but when my psychotherapist suggested I should get formally assessed by a physiatrist I began researching and sent my mind on having BPD so much so that now I think I may have manipulated the physiatrist into diagnosing it because (while everything I told her was true) I tailored it to match what I knew of the diagnostic criteria. I'm aware of quiet BPD because I'm fully functional and from the outside no one would suspect anything but don't relate to that either because I don't act out even among family or the people I'm close to. I also don't have any childhood trauma or PTSD symptoms. I know autism can often be misdiagnosed as BPD in females but I've also researched that and don't relate so have come to the conclusion that are isn't anything 'wrong with me. But I'm too scared to bring this up to my psychotherapy incase my diagnosis is removed and I'm terrified to go back to not having any 'labels'. I don't know why I so desperately want there to be something when there so clearly isn't but I know I'm wasting a lot of people's time and energy in the process.

EDIT: I've also never attempted suicide, had an eating disorder or even ended up in A&E for my mental health, let alone hospital