Still don't believe it

Crystallyn
I'm still having a hard time believing I'm pregnant. I'm 5w6d and I have a Drs appointment on Monday but I still have a hard time believing that I truly am going to be a mom again. 
My first and only pregnancy that registered and stuck was 10 years ago. I had a miscarriage in March. I took one test and before I could take a second to confirm I started bleeding, took the second test and it was negative.