Leaking??

How can you tell if you are leaking fluid? It’s not my discharge because my discharge is still white and creamy but in my underwear it’s like wet around my discharge pretty far up and down and it’s clear so definitely not pee. This has been going on a few days or so now but today is the first day it felt like a lot of leaking but not normal discharge leaking and I checked my underwear and they were wet and it got so wet that even my shorts were wet. My appointment isn’t till Tuesday since it’s the holidays. I’m 33 weeks and 2 days.