Anxiety

Jess
Hi everyone, 
I'm new to this pregnancy thing too. Im 12 weeks along and Im having trouble, kinda hard to explain, trusting that I'm still pregnant. I mean I know I am, the ultra sound when I was 8 weeks told me so, but I havent had reassurance since then and its messing with me. I'm still going threw all the things you go threw while pregnant, but hearing my babys heart beat 4 weeks ago was the best evidence and reassurance. How do I deal with this while Im waiting for my next reassuring ultra sound? Have any of you gone threw something like this?