Tons of wet slippery cm early

Liz • One 21 month old healthy boy, one angel boy lost at 25 weeks. TTC #3, hoping for my rainbow!
Today and yesterday I've noticed a ton of wet slippery watery cm that's so heavy it leaks on to my underwear (it's not semen although I have been having sex). Glow says I won't ovulate for another week! What is up with this? It's not stretchy or egg white yet. Anyone else have this for a week before ovulation?