TMI!!!! Do you think these are piece of my plug or just increased discharge? 37 weeks, 2.5 CM dilated.....?

HI LADIES!! I am 37 weeks 1 day with my 3rd baby. You would think I would be a pro by now, but I AM NOT!!! LOL!!! As of yesterday at my Dr. appt. I was 2.5 CM dilated but 0 % effaced (which is normal for...I never seem to efface until well into labor) ANYWAYS, my Dr. stripped my membranes yesterday also. I have had a few contractions here and there but nothing to get excited about. However the last couple days I have noticed "chunks" of thick stringy yellow snot (looks like when you are really sick and blew your nose EW TMI SORRY!!!! LOL!) I remember losing pieces with my last baby a few days before I lost the "big bloody blob", but I can't remember how I knew it was pieces of it. It definitely seems different than just dishcarge but who knows? LOL! Anyways, do you think I should chalk it up to increased dscharge or do you think it could be pieces of my plug? THANKS IN ADVANCE!!!!!! :)