Do I have OCD?

I have things that might be defined as obsessions, and some compulsions that I do, because of them or because of other things.  I dont know if that means I have OCD though...I am very confused.  I cannot think of many things now, but whenever I am in woods I constantly check myself for ticks because I am afraid of them.  If square floor tiles are large enough, I step inside them, not on the lines.  I often ask people if they are mad at me or if I hurt them, sometimes multiple times for no reason, because I am so afraid I have.  I always check chairs for dirt or anything gross on them, and wont sit on them if they do, even if it is dried paint or soemting that would not get on me.  I have a lot of things like these, I just cant think of them until I'm in the situation for the most part, experiancing it.  I don't know if it is OCD, a different mental disorder, or nothing at all.  Do I have OCD?

[bosnianworrier]

We cannot diagnose you here but IMO it sounds very much like OCD. However only a doctor can diagnose you and if the symptoms are bothersome, then go see one.