Vaginal vs abdominal measurements?

💖💙👶🏼

Has anyone had a vaginal ultrasound show one measurement and an abdominal show another? I just seen my OB today and abdominal

Showed 13weeks CRL. But last Tuesday i had a vaginal at my fertility dr and the baby measured 13w3days. My OB isn’t concerned at all. But it worries me. Anyone had this?