Low intelligence or anxiety?

Quick question?!

I've been on the verge of thinking I have low IQ. BUT, I have my CNA and passed that.. some people don't. Anyways, my therapist said I'm average intelligence and she doesn't think I have an intellectual disability, but I did miss a lot of school in my learning years. So I was placed in special education, I had normal classes for all of them just some had a paraprofessional. They put me in cause i fell behind due to missing a lot. I do have ADD, got diagnosed in middle school. I have this thought that staggers around my head that I'm intellectual disabled or impaired. Everyone around me says I'm fine, but I keep obsessing over it. I took a few Mensa tests and the first time I took Norway I got 88 then I took Denmark and got 102. Like I said my therapist said in order to pass my CNA I'd need to have average intelligence. Is she right? 
The ladies at work always say I do a great job and got employee of the month after two months being here. I've been a CNA 5+ years and I felt like after that I started to mess up I switched to the hospital. Do you think the nurses think I'm dumb? Idk I'm so worried. 
This is strange I know, but I was considering moving to Texas and I thought of the list of things I needed to do. Like look into insurance, jobs, wondering about my taxes. Am I normal? Or am I just low IQ? I KNOW I shouldn't be asking on here. 
Wouldn't they found it before turning 25!?

Idk, I feel like I'm treated differently.. but maybe it's my head telling me different. Is this just anxiety?This shit is embarrassing.

A nurse asked me to go get a Telly, we have telemetry boxes and telesitter devices that we put in the room for them if they have behaviors it's like a camera and someone watches over them. 

She asked me to get a telly and I thought she met telesitter, so I told her I didn't know where it was lol. But she meant a telly box. And the nurse showed me where it was. Ugh it's embarrassing. I'm such an airhead lol. I worked all night. Am I a dumbass...  lol