Early pregnancy

Brooke

Hi, so I had my last period on the 5/5/20, I recently went to hospital because I had a streak of blood in mucus wasn't much very little I've also had no clotting, I did have cramping aswell I haven't bleed since, They gave me an ultrasound and my uterus measured 5 weeks and 6 days there was no yolk sac/ baby I'm so confused 😭 does anyone know if this has happened to them or what's going?