Could this be amniotic fluid?

Im 36 weeks and yesterday while i'll was sitting on the couch I got up and a small gush of liquid (about a handful) came out, This sounds gross but I stuck my hand down there to see what it looked like and it was like water and it had no smell. It was enough that it soaked through my sweatpants and i had to change them (i wasnt wearing any underware). I could clearly tell it wasnt urine cause I couldnt control it. Well any help would be appreciated, i did call my ob and leave a message but they take 24-48 hrs to call you back. Thank you