[oib]

I had myself be tested by a psychologist when I was around 8 I think, and again when I was 20.

Should you care?

I'm not sure, you can look into tools that are recommended for dyslexic people (a spellings corrector is probably the single biggest thing), but you can try those without actually knowing if you are...

If you are a student then your school may provide special facilities for you. Other then that I can't think of a reason to care, besides satisfying a curiosity.