Baby Measuring Small

Bianca 👦🏻 🌈 🌈 👦🏻

Had my first ultrasound on 8/10. According to ultrasound baby is measuring at 6 weeks 3 days. According to LMP I should be 9 weeks today, but I know from my opk that i ovulated on 7/1, which would put me at 7 weeks 4 days. NP is pretty worried and wanted to prep me for the possibility of a MC. She also said the gestational sac was a little small. Baby’s heartbeat was 144. Just wondering if anyone else has gone through this and had a good outcome?