Did my water break?

I'm 36 weeks tomorrow. I went swimming this evening and about an hour after getting back I was walking up the stairs, I get the the hallway and feel a bunch of drips go down my leg, like a small gush of water. I look and there's five drops of water or so on the floor and I'm really wet. (Wasn't wearing anything under my dress) It seems to be very light milky white. It's been an hour or so now and I haven't had any contractions. I just don't know how to judge whether it was my water breaking, water from the pool, or involuntary peeing or anything else. I have an appointment at 3 tomorrow so I'll have him check it all out then, just looking for some guidance and your thoughts. Thanks!