No follow up ultrasound?

Kimberlee • Mama x3 | 30 | Married ❤️
After my D&C 2 weeks ago, I call my doctors office today to see if they are going to check my hCG levels and do an ultrasound to see if everything looks good. She said no because the doctor knew that she got everything out when she did the suction D&C. I asked her how the doctors know that my uterine lining is healing well, and she said my doctor sent off some tissue for the lab, and everything looked good. Well, that's great and all, but I'd like an ultrasound. They won't do it. I don't know if I should be worried or not? :(