Used the bathroom, when I wiped I had greenish/yellow slime like snot. What could that be?

I looked it up and it said that could mean a few hours, to a few days, to a few weeks. Is that right?

I was having contractions last night 2-5 minutes apart lasting 1-2 minutes long. And tonight they are starting back up but not regular so I'm not too concerned

Okay thank you.