Any possibility?

Brianna • 20 years old & have a rainbow son after my first miscarriage 🌈
Beyond heart broken, I had my scan today to check for Down syndrome & I'm 11 weeks 2 days. The first thing they said was baby was measuring small & now no hb or blood flow to baby? I'm so confused I haven't had any cramping or bleeding. Nothing. Why? They seem pretty sure. I couldn't see the hb either.