Mucus plug??? No picture!

Alexis • Ava Elizabeth due Dec. 31, 2015 ❤️❤️ came on January 5, 2016 💜💜
Ftm here/ But last night I had two globs pieces that were thick and yellowish, also this morning. Just turned 37 wks, but I would like to know does your mucus plug have to be bloody or can it be yellowish? I'm asking because someone said it varies between women but I've always heard it would be bloody or browinsh. Help?? 😐