18 & pregnant

I am absolutely terrified. This was not planned but I am with my boyfriend of 4 years and he is being completely supportive so I guess I would consider myself lucky. I just know I’m not ready for this, mentally and financially. Me and my bf just moved into an apartment and neither of us have the best jobs. I told my mom and she said she was really disappointed in me which is what breaks my heart the most. Idk what to do.