Do i have OCD or something?

anything that i write down on paper, and on the internet, i always feel the need to read it all over and over and over again, to check for any mistakes/typos, and i do read it at least 5-8 times over...so annoying. and if i do find a mistake, i laugh at myself, not on purpose. i don't know why laugh...even when i post something online i still read it over and over to check for any mistakes, even though i can't fix any mistakes that i may have made...also there's a wooded chair in the dining room. every time i walk p that chair i feel the need to touch it. if i don't touch it, i get this nagging feeling to walk back over to the chair and touch it. do i have OCD or something? thanks :)