So I have a few apps giving me different timelines and I am wondering what is right, my first day of my menstrual cycle was 9 nov and I ovulated on 27 nov. the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> that I was <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> says five weeks two days but the glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> says 4 weeks 6 days. Anyone have insight on what is right and why a difference in the apps if both are glow.