Is this a sign of labor or completely normal?

Abigail • Pregnant with #2 & twins this time!
I'm 33 weeks and when I went pee earlier, and wiped, there was a bunch of discharge on the toilet paper. Definitely more than usual. TMI but when I wiped, the toilet paper had so much that it was slimey. No color to it. But is this a sign that preterm labor may occur or is this normal?