5 недель беременности: видно плодное яйцо, но эмбриона пока нет. Что дальше?

Been for a scan today… they can see the sac but nothing inside yet. They’ve told me not to worry because I am only 5 weeks today and they wouldn’t have expected to see anything. I’ve had bloods taken I’ve got to go back Sunday for more and see where I am with them. So still a waiting game x