In school I was placed on an IEP 6th grade, I had fallen behind in math and had one for reading also. Other classes I was moving along at the rate of my peers. They said I had a reading disability but I think it was due to ADD my whole family has it. I also missed a lot of school and fell behind. In my IEP papers it said I had a reading disability but it got stabilized in 12th grade, but now I have no issues with reading. I didn't really try in school, anyways I got my CNA certification through HS. I passed the boards and now work in the hospital as a CNA. I am 25 now and worried I have an intellectual disability like borderline or mild. My therapist says by the way I talk I seem to have an average intellect. I used to work with adults with disabilities and now I think I have one. I did a cognitive test online they said it was accurate and I know it's not the best option but I needed piece of mind. Redditors said it was pretty close to IQ tests and I got 99-102. 

Do I seem okay? wouldn't they have caught it by now if I did? I am just overthinking this?