A writing disorder? or something?

I think there's something wrong with me, when im writing sometimes, it seems to be getting more frequent, ill write the second letter in the word first or sometimes even the third. Like ill be in the middle of a sentence and try to write the word "whatever" but ill start with the h and then have to squeeze the w in there. Is this dyslexia or something? Ill do it with numbers too like in 13 ill write the 3 down first without even thinking about it and then have to go back