Watery discharge 16 weeks

I’m so worried... for a few days now I’ll get a gush of watery dish charge that’s clear, I’ve been throwing it off as just an increase of discharge bc it happens like once and nothing else afterwards and I have no pain. I tried to call the on call doctor but I get no answer, I’m currently 16 weeks and 2 days and wondering if this is something any of you ladies have experienced or not. When it happens it feels almost like I peed on myself but not to the point that it’s like dripping down my leg.. kinda hard to explain honestly.