Waters trickling or pee?

So everytime I've been to the loo today I've noticed a wet patch on my pantyliner, it's gotten bigger over the course of the day to the point it has overflowed onto my knickers. It's clear. I don't know if I'm letting a little pee out every now and then (I don't feel it) or if my waters are slowly trickling out. Has anyone experienced the same? I'm 36 weeks.