7wks5days and only yolk sac seen

I had my scan today and they could only see the yolk sac and no baby. They measured me at 5wks5days - I know my dates are right as I had a positive pregnancy test 4 days before my period was due. They said to have another scan in 1-2 wks to see ifs there’s any progression (embryo present). I’m very aware this is really unlikely as I can’t see how I could be two weeks behind. I’ve had no bleeding or cramping - what do I do now just wait until the next scan? Has anyone has this experience with a positive or negative outcome? I just don’t know what to expect? 😔