Insane worry

I'm 11weeks and 5days and the fear of missed miscarriage at my scan this Thursday is now ruling my life. I'm terrified. I had a missed miscarriage last year and can't bare think it's going to happen again. I'm getting upset all the time. 
Reasons I'm concerned:
-I've had no symptoms for 2-3 weeks 
-I had very little symptoms before that anyway
-I had one wipe of pink blood when I went toilet 2 weeks ago 
-I have no bump, just fat
How do I get through today and tomorrow until the scan? And how do I cope on the day?? 
I've added a photo of the baby at 8weeks 6 days, but my concern has grown greatly since this.