No heartbeat

So I am supposed to be 7 weeks and had a scan yesterday they seen a fetal pole but no heartbeat measured at 5 mm , they have sent me home to prepare that I may start bleeding but I have a rescan next week, I don’t know why I’m writing this really , I guess hoping that someone els has had this and it’s been ok ? I have no bleeding or symptoms I’m praying that I will see a heartbeat next week