Help! What's this discharge? (No gross pics)

Emily • Boy 4/14/16 💙 Baby due 11/1/18 💚
Just went to the bathroom and found a giant glob of discharge. It was almost like ewcm consistency. All attached and very long. When I balled it up it was about the size of a bouncy ball and felt gummy. No yellow or green to it, almost like a cloudy white/clear.  I'm 17+5 days pregnant. Last night I did have sex with the hubs... Could it be from that? Or what else....?