Have I got OCD? Or am I just very neat?

It's not OCD...you just aren't a slob like the vast majority of teens. I'm a guy and when I was in my 20's, I used to endure women my age going on about how messy guys were. Since that time, I've been in enough females dwellings to know gender has no bias when it comes to sloth! Hang in there...it's refreshing!