I know the feeling... I don't really have any advice, as I'm kind of in the situation right now.

I was in a serious car accident in September, and among other injuries, received a "moderate" concussion. I brought up having some difficulty finding words with the neurologist (that I was referred to for the concussion) and he kind of blew it off, and focused on the headaches. I was working on homework tonight, and kept getting frustrated, because I knew the word I wanted, but I couldn't get my brain to actually think of the word.

I hope you can get someone to listen. I wonder if you could get a second opinion, without them seeing the first opinion... idk.

One of my mom's old colleagues was diagnosed with an extremely rare disorder, that several doctors had missed. He ended up in the ER, and an intern/resident, who had just read about this disorder for class happened to be the one that saw him, while other doctors were saying it was psychosomatic or that he was exaggerating the symptoms.

Sometimes, it takes trying over and over and over until you get the one doctor that believes you or knows exactly what it is, for whatever reason.

Keep trying!