Anyone else nervous or anxious after announcing pregnancy?

So I finally told the last of my immediate family last night that we are expecting and we announced it on social media (for extended family and friends) this morning... I am 12 weeks today and ever since we posted on social media I have been so nervous/anxious. I keep thinking what if I go in for my ultrasound on Friday and there is no heart beat (we had a horrible miscarriage in Nov 2017). I don’t know why I can’t get rid of these thoughts and just be happy and in the moment. It’s like it’s always lurking in the back of my mind. Does it ever get better/easier?