Do I have OCD or am I just a little picky?

.Ok, my girlfriend thinks I have OCD. This is why. One, I fold all my underwear and sort by color, boxer, boxer, briefs, and tighty whitey. I hang all my t-shirts and sort them by color, and whether they have anything printed on them. T-shirts separate from button down shirts, separate from polo shirts. Pants are separated also, slacks with slacks, jeans with jeans, sweats with sweats and so on. I do like to have things in an orderly way in my home. One thing she teases me about is the eggs in my refrigerator. See I have this thing about how the eggs are placed in the carton. I feel like they have to be balanced. In other words they can't be all to one side cause when you pick up the carton you may drop it. So, I always even out the eggs and sometimes in cool little patterns. I do sometimes lock my door three times before going to bed. Is this OCD or is is it just being a little picky?