Anyone else not getting a u/s until 10 weeks?

A • Living the dream. 5 year old boy, 4 year old girl, b/g twins on the way!! What a surprise!! Due in December!
I'm 7 weeks 3 days, I had an ultrasound at 4+6 and we saw two sacs. I'm dying to know if there are still two babies! It's killing me! Dr says I shouldn't have another u/s for 2 and a half weeks. I wouldn't be so impatient if I wasn't questioning two babies! To make it a little worse, I'm measuring 9 cm and should only be 7cm. Anyone else getting a u/s around 10 weeks? Not until May 26th :/