When they took the urgent ultrasound, what did it
show?
The subsequent
ultrasound showing no signs of pregnancy usually would indicate a miscarriage. I'm so sorry and really hope it's a mistake and that you're still pregnant, but there is a high chance of miscarriage in very early pregnancy such as yours. It had happened with me too, where i had only spotted, didn't bleed, and then when they took an ultrasound, it showed a fetus that had stopped developing further.