Did anyone else feel like this with their pregnancy?

I am 5 weeks pregnant and this is my first pregnancy that I am very happy to find out about even though it was a surprise. I am also in my mid twenties. I am a usualy worrier, however I'm so worried about miscarriage after hearing all the statistics. It also is hard for me to think that I have a baby inside me and I feel like I am going to miscarry before I end up going to the docs at 8 weeks. Was anyone else so afraid of miscarriage and ended up with a healthy baby?