Snot like CM?-no pic

Hi! I don't really get cm, even if I try to find it. A few moments ago I went to the restroom and there was smith like CM on the toilet paper. It had the slightest tint of yellow-but really it was white. According to glow I'm approaching my fertile week, is this fertile cm? Or what it's like approaching ewcm? Any help would be great! Thanks!