Water possibly?

So three times today my underwear have been very damp almost to the point of soaked but doesn’t smell like pee? Last night boyfriend and I had sex and when I got up after sitting for a minute there was three big wet spots way to much for it to be his cum? Is this my water? I’m scared I’m only 31 weeks and I’ve had mild contractions all day but I didn’t think anything of it because I have an irritable uterus and sometimes get mild contractions consistently for no reason. Please help