Weird Head Sensations

I have been experiencing strange sensations in my head since I had my son, who is now 11 years old. These sensations feel wavy and like my brain is going to just shut off. I feel like I have to do things to keep myself alert or it will just shut down. Recently, I began experiencing internal shaking or vibrations. They’re not visible outside, but inside I just want to crawl out of my skin. It seems to start at the nape of my neck and my brain feels like it’s shaking and it moves down throughout my entire body. It’s worse at night when I’m trying to fall asleep. A couple times lately I’ve broken out in hives at night with it. I am currently only taking Prilosec and some vitamins. I am extremely sensitive to all psyche meds (sertraline, trazadone, Ativan) and cannot take them due to the side effects I experience. I have cut gluten out of my diet which seemed to help, I have Hashimoto’s, but no other known conditions. I can’t get into a neurologist until December. I am miserable and scared. I’m only 35 years old and this is a terrible way to exist. I feel alone and like I’m crazy. Has anyone else ever experienced this? This is not just anxiety, something else is happening.