Waters or discharge ?

H • •🌈💙12/18, 💙11/19, 🌈💗11/21, 💙5/23•💍03/13•

I’m 36 weeks, today after sitting a long period of time, I got up and started leaking. Super watery, I went pee and had lots of mucus come out. Laying back down and noticed I’m extremely “wet” down there. Super watery. How do I tell if it’s my water or discharge, also should I call my doctor ? I feel like I’m nagging him all the time 🙁