I don’t understand why they base your estimated due date off of the first day of your last period. If anyone could clarify this please do!! I know ovulation occurs after menstruation so why does the week of my menses count?? I understand this is a method used just as an estimate but I feel like I’m earlier than six weeks but just want to be further along for the sake of my baby but just so unsure I have an ultrasound tomorrow I was feeling uneasy because six weeks is so early but am feeling even more uneasy at the thought of being 1-2 weeks earlier than these apps are telling me! Thank you ladies 🤍