I am 18 years old and pregnant. How do i do this all?

I am 18 years old and i just found out im pregnant. I am living at home with my parents and i know that as soon as i tell them they will kick me out. I just started my job so there is no way i can get an apartment yet. People have told me about income based housing but i don't know much about that. Also my mother said she would take me off her insurance if i ever got pregnant. Can someone please help me i am in desperate need for some advice. Either on how do i find housing. or How do i tell them. Or how i would pay for dr bills if i have a minimum wage job. Please help me i am so scared im going to do this all wrong.