TMI question!

Elizabeth
So not sure if started to lose my mucus plug or what.  I had a lot of discharge twice today that was a bit yellowed, and the second time had a bit of something with it that was more of a clump? No smell like a yeast infection, I have had one before.  I have been noticing more BH contractions and having more nausea the last few days as well. Baby is still moving like normal, he has been head down for ages already.  Could I be softening and starting to dilate? My next apt is Thursday.