Discharge or fluid?

I am 24w5d. I've been having moments here and there where I get a quick gush of fluid. It looks clear and watery, and is also odorless from what I can tell. Sometimes soaks my underwear. I was at the doctor today and mentioned it and they said "I'd know" if it was my water and not discharge...but I don't really know how I'm supposed to "know". Sometimes I don't feel it and I go to the restroom and notice it and sometimes I just feel it. Just want to know if anyone else has dealt with this before I drive myself insane.