Struggling to Find an ADHD Diagnosis

I haven't been diagnosed with ADHD yet and it's been hard finding a doctor that will take my insurance. From what I know ADHD runs on my mom's side. She says she has been diagnosed in college, my brother is currently taking classes because his school has suggested he has it (not sure if that's an official diagnosis). My mom's boyfriend definitely has it (diagnosed and takes medication) and is highly aware of my odd behaviors and social/intellectual struggles and is certain I have it. Because I'm not diagnosed and it's hard to get one where I am, I find it hard to believe I might have it. I don't want to go around saying I do or saying I relate to people who actually have been diagnosed. I feel like giving up my search for a doctor who will evaluate me and I'm afraid of digging a financial hole for my family. I have a history of being a hypochondriac and trying to figure out who I am and what's wrong with me so it's hard to trust myself or for people (my dad, his wife and his side) to trust my judgment. I come off as emotional and blaming my lack of development on my mental health. If I don't get an answer or if they say I don't have it, I know I will feel alone. Can anyone share their experience with ADHD or getting diagnosed? I'm willing to go into detail about my symptoms and my experiences as well.