As you pass certain milestones in pregnancy the fear will start to go away. I had a miscarriage back in 2010 and got pregnant again 3 months later and was so scared the first few months. But as you progress it will become less and less.
I know how hard it is to relax, but your at the 10 week mark now which is fantastic! Try to enjoy every second, and talk to your doc about your anxiety as they may be able to alleviate some fears. Good luck and keep me posted!