15 and pregnant

I found out I was pregnant two days ago (after a missed period I took a test) I told my boyfriend(18) and he had the same reaction as me (shocked and somewhat excited) I showed him the test and he just had a goofy smile.it really hasn't sunk it for me yet and I feel really emotionless.i decided to wait until the first trimester is up to tell anyone because it feels like something is going to go wrong.i just hate the fact everyone is going to think we ruined each other's lives and feel like I'm not as scared I should be.i feel overwhelmly calm as I prepare for the next steps I should take.

any advice we be truly appreciated