Hey hun!
Firstly, welcome to the OCD boards. You probablly do have OCD, but none of us can diagnose you here but you should see a doctor about it-don't be ashamed or shy or scared, there only there to help.
I do this too!- "IF I make a mistake when I'm typing a paper or email I erase the WHOLE sentence instead of that simple word because I feel like the sentence just "wouldn't be right"." -It's so frustrating aye? I'm slowly getting past it but I did that for 2 years and it drove me absolutely crazy!
I feel for you hun, OCD is a hard thing to deal with and live with but with a diagnosis and some help you'll be on your way to reovery in no time hopefuly!
Keep me posted!
Dramaqueen.