Watery discharge or leaking??

How can I tell the difference? This is my 3rd pair of underwear I’ve changed. I can actually feel it come out.

3rd baby. 32w1d

With my first I leaked and they said put a pad on and if it fills up to come in, never did. Had an appointment the next day let them know and they tested

and I was leaking fluid. And ended up being admitted.