Why is it that glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> tells you that your due date is from your last menstrual cycle when you know you got pregnant well after that? Does it mean you count from the daw you got pregnant, or do you still count from the last period. I just don't believe I'm 4 weeks, I think I'm more like 2 weeks.