waterbag burst or no?

Hi mummies, im in my week 39 + 3 days today. i experienced a sudden gush of liquid from my bottom. i went to check my pantyliner is wet and theres some yellowish clear discharge to it. it happened in the morning, so far no contractions yet. so im unsure if i shld call labour ward or not? i didnt manage to take a pic bt 1 of my cousin said maybe i peed? #pleasehelp #advicepls