18 and pregnant...

I just found out I’m pregnant, I’m guessing around 4 weeks or so and I couldn’t be more excited!! My boyfriend and I have been together for 3 years and he’s as excited as I am (:

The only thing I’m really worried about it how I’m going to tell my mom... my boyfriend and I have been looking for an apartment together for a few months anyway, so now it’s a definite that we’ll be moving in together. My mom though... she would freak over the idea of us moving in together before marriage, let alone the fact that I’m not a virgin and expecting.

Anyone have any insight or advice? Thank you!