Did my water break? How do I know?

I'm 41 weeks and have been having cramps all day...I went to the bathroom, then got myself a drink and a snack, then sat down to watching a movie and all of a sudden I felt very wet. My panties and pj pants were wet. I smelled it (sorry tmi I know) and it didnt smell like anything. I got up and put new panties and pj pants on and havent felt anything since. Did my water break or is this just some discharge thingie???