Kindof bummed.

So I had to go to a new dr. To get clomid after ttc for 2 years. Finally it worked and I am excited. This is my second pregnancy and I loved my first dr but due to insurance I had to switch. My first dr confirmed me at 8 weeks with a transvaginal Us. My new doctor currently wont confirm me with an US until I'm 10 weeks because they said they wont be able to find a heartbeat. I have seen some women hear a heartbeat at 6 or 7 weeks. I'm just confused? I didnt have that issue with my first. I'm 8 weeks today. I have my first ob appointment on Friday and was alittle dissapointed to not be able to get a peak at my baby and make sure everything is ok or if it's in the right spot. Just to ease my mind. Idk if anyone else has had this problem? I'd love to hear from you.