Learning Disabilities Organizations I Am Fourty Years Old, And Have Always Felt, That I Have A Learning Disability. Where Can I Get Tested?

I am fourty years old, and have always felt, that I have a learning disability. Where can I get tested? - learning disabilities organizations

I did not do well in high school. I'm not good at math, I use a calculator to solve basic multiplication and division problems. I do other things and act a certain way. I always felt something. I tried to get help to see if I have a disability, as I suspected. Which organization should consider in my age?