What would you do?

So I called my OB/GYN, at the beginning of December when I found out I was pregnant. I tracked this pregnancy down to the literal day. My last period started on November 14th… my doctor obviously had me come in and do the two blood draws to verify pregnancy, and that it was doubling. That went fine. Two days later they then called me and said that based off the results I was super early and didn’t need to be seen until January 25th. According to this app, and also a due day, predictor app I’ll be 9 1/2 weeks by the time I have an appointment. With my son and I had an appointment right around eight weeks. With a history of a miscarriage prior to my son I don’t know if I feel comfortable. When I called and asked appointment to be moved a week earlier they said no. What would you do?