Frightened please help

I'm in the uk and unless you have issues you have to wait till 12 weeks for a scan! I'm 9 weeks today, so got at least another 3 weeks to wait, I'm so scared of going for us and there been no baby or a baby that hasn't grown!! I'm driving my self mad, I dream every night that I'm having a miscarriage (suffered in past with one) so I spend all night running to the toilet!! My pregnancy symptoms are so strong that it must be going ok, is thus just me or are others going through it aswell x