CM help!

Katie • Baby boy- April 2017
I'm only on day 8 of my cycle, and I typically ovulate around day 16/18ish. However, I am having a ton of EWCM today. I took an OPK and it was negative.... Any idea what this could mean?! My period week was shorter and lighter than usual, and took an HPT the day after my period ended because it was abnormally short, but it was a BFN