###Human: My second ultrasound showed an empty embryonic sac. How is this possible? ###Assistant: dear, welcome toiclinq. com I can absolutely understand ur concern.. what u are going through must be missed miscarriage.. this is because of defective embryogenesis( the ovum , becos of ur age may have meitoic dysfunction .. resulting in multiplication errors) ... it's a waY of of natural selection in which only the good embryo moves forward... just wait for a week, rpt USG, and decide as per reports.. Do not worry... u have 2 kids... we do come across such worse scenarios in women going through ivf pregnancies .... stay bold..., it shall pass by... hope u find it useful regards missed miscarriage tvs after a week missed miscarriage as per scan reports if any query