I'm 4 days late for af, and I'm usually never this late. I took a pregnancy test the day after I missed af but it was a negative. I'm not stressed at all, and I don't really have symptoms like I normal do for af.. No cramping and I have white cm which is weird because I'm usually dry before af shows up. My nipples have been sore the past 1-2 weeks and my breasts just started becoming sore today. Advice?