Week 5 Day 2 Scan

Hello mummies! I had a scan ytd, but I was only week 5 day 2. I think my gynae scheduled me a little earlier because of previous conditions or maybe due to CNY period. He saw the gestational sac in womb but said could not see yolk sac yet. He said it might be too early and asked me to come back in 2 weeks. Anyone had similar experience? I am a little worried. #pleasehelp #advicepls