There is a lot of different types of Dyslexia..
My sister forgets which letter is which, My dad can't read properly because the letters jumble up, and my friend has to have work on YELLOW paper before it make sense.
You should find somewhere (school etc)
who will screen you for free, they just do a test and then you would know.
But i don't think dyslexia makes people speak things about the wrong way..
i thought it was all learning based... i could be wrong though