Only genastional sac

Lo

I went to the doctor yesterday, I’m supposed to be 7 weeks 3days from first day of LMP but from the ultrasound i was told i was measuring 5weeks4 days…..I’m kinda nervous doctor did hcg and progesterone test waiting on a call now I’m so nervous but she told me everything look good but idk i had miscarriage before I’m kinda scared