I think my apps are getting a little confused - and I am too. My cycles used to be approx 28 days. My last real period was august 29th, found out I was pregnant October 7th and miscarried on October 11 at about 6 weeks. I started my period today, First one since miscarrying. I logged the bleeding from miscarriage and now I think the apps are trying to recalculate my average cycle. They are showing me my next fertile window is not until about december4th but if I'm going by my 28 days I think it would be around nov 27.