So upset

Kelly • Wifey 7.21.18 💍 Dog mom 🐶 👼🏼x1 pregnant with 🌈 due 10.15.19

So I thought I was 8+2 today but had my first ultrasound and baby is measuring 6+1 but no heartbeat so I go back in a week. Has this ever happened to anyone ?? Dr thought she saw fluttering of a heart. I’m so upset and so worried