I'm starting to notice this and I wondered if anyone else has also. Sometimes I will go to the bathroom and not see much CM when I wipe. But if I poop and then afterwards I am wiping, then I will see CM. I wonder if maybe it is because pooping causes some straining that forces the CM down out of the cervix so that I can see it? In fact that is how I just found out I still have some ewcm. I had not noticed any CM today at all until I just went to the bathroom.