Miss. I only ever see ewcm on the bog paper after wiping from a wee or when I've had a poo and there's a string of stretchy snot hanging from my vagina. If there is ewcm on the paper and/or hanging out of us, imagine how much more is up there lining the cervix 
P.s..I only see ewcm for one day in my fertile window and it can be one, two, three or four days before I actually ov. No matter, though, it probably remains up there for days but doesn't always appear on the paper.