Threatened miscarriage?

Desirae

5 weeks pregnant and I woke up to blood. A good amount of it. Bleeding and clots so I automatically thought the worst. Went to the ER where they did an ultrasound and blood work. They said they didn’t see a fetus. My heart dropped. Doctor said blood work showed I’m pregnant but levels are low and to come back in 48 hours and see if my levels go up.

He said there’s no definitive answer yet.

What does that even mean? I’m so confused. So pained.