EWCM...

I keep reading a lot of mixed things... do you have EWCM leading up to ovulation or only the day you’re ovulating? I started BDing the day I got EWCM and am hoping O didn’t pass me by. I was really close to a positive opk the day it started showing up and now I’m on vaca so I haven’t been doing opk... so thinking maybe the EWCM starts a few days before O...that would be nice because there will be sperm waiting for the egg in that case lol