Hello, I Am Looking For Advice On A Miscarriage, I

Hello, I am looking for advice on a miscarriage, I was in hospital and the nurse was sure a passed the fetus, the next day I had a scan which showed a sac and the yolk. I decided to wait for it all to come out natural a week later yesterday I had a further scan which show sac and yolk which had grown but still o fetus pole. The doctor advised me to wait 10 days and return for scan to check again as not 100% no miscarriage due to the grown over a week? Is this normal? Could I still be pregnant? Or is it as I thought just a miscarriage