how to tell if its broken waters OR pee?

tmp-9166839

I went to the bathroom (number 1 and 2, sorry if its TMI) and when I got up, I went to get a pad but "stuff" (pee or waters lol) started leaking on the floor. I got toilet paper to wipe it up and more started coming out.  Im confused because it wasnt a gush.

 

However, its clear and doesnt look or smell like pee. Plus we just got home from a 2.5 hour walk and doc said yesterday I was 80% effaced, 4 cm dilated and contracting beautifully. Im 39 weeks today...

 

Waiting for MW to call back but in the meantime, anyone have any similar experience?