39 weeks. Sex is getting weird..

So.... tmi. But.. we had sex last night... and at the end, the bed got very wet. Very very very wet. I don't know if I peed? Or if my water broke? It doesn't have an odor to be able to tell either way. If it was my water breaking, I would expect to have started contractions overnight and this morning, but I haven't. Baby still moving like normal. ....I have my weekly ob appointment first thing tomorrow morning. I don't think I need to go in and get checked before then, or should I be more concerned? (My group b strep was negative, so I wont need immediate antibiotics once my water does break). I have a fetal doppler here at home. Haven't noticed any leaking yet today.