I'm in the exact same boat as you! I'm due today too and still not lost my mucus plus or anything! Absolutely gutted lol
I'm also right here with ya. Ive lost something from mucous plug and I've tried everything from hot Indian curry to sex, walking, eating pineapple (it only gives me heartburn). Nipple stimulation triggers some contractions which are pretty irregular and feel like they last forever so it doesn't seem to do very much tbh. My MW is taking me in for sweep today so fingers crossed.