Scan 10 weeks + ?

Just to share. Last night we had scanned our baby to check on him after an 18 hours journey from Kelantan ?. To check either he's ok or not in there. Alhamdulillah everything was ok. Got to hear the heartbeat, see his tiny little body, head, hands and legs. ? It was like he knows we are looking at him ?. But the doc said he was 9w+ so it was diff 1w. I'm not afraid just want to know how can it be that different? Mind to share your thoughts mommies? ?