How did you know you were having multiples?

Audre • To be able to create something so beautiful is one of the best gifts from God.
I'm 9 weeks today with my rainbow baby and the doc called with my blood work results asking me to come in tomorrow because my levels were extremely high. He wants to do an u/s to see if it's just the one baby 😳 but he also said don't go around telling people you're having twins just because he said that either lol. What does it mean when your levels are really high? I had a m/c back in June so every little thing about this pregnancy worries me unfortunately. I just want my baby(ies) to be healthy! Anyone received news of twins after a miscarriage/high levels?