Twins, single, or too early?

F

I was at the doctor Tuesday to make sure the bleeding I was having at 5+2 was normal or okay (I had it with my first too) and they said it was fine, but the doctor mentioned the possibility of twins. Also mentioned that my hCG for where I was was “above average” which could mean nothing or something. At 4w was 457, at 5 was 6800. I’ve had multiple friends, 2 of which either are twins or have twin siblings, mention that this ultrasound looks like what their moms did with them/sibling at the same time. What do y’all think? I was 5+2 but measuring ahead at 5+6.