FTM question- Mucus Plug?

Courtney
I am a ftm and I will hit 39 weeks Wednesday, and have been very active walking to get things moving (with Dr consent). Yesterday we walked a ton and today I stayed on my medicine ball all day at my desk. By the afternoon I felt the need to pee and just "wet" down there. When I went to the restroom there was a clear discharge that was super thick goo. I've had discharge already throughout my pregnancy but this seemed much different. (It wasn't my waters for sure) Do yall think this was my mucus plug? There was no blood like some people have described.