.... please read .. I need some advice ...

If I'm underage & pregnant do i have to tell the doctor who the father is ? He has said he doesn't want to be involved so I feel I shouldn't have to .... but since I'm underage I dont want them to get cps or the police involved .... I was NOT raped & yes the boy is my age .... I haven't lived with my parents in 2 years & dont want to tell them about my pregnancy which is why I'm worried about the doctors office reporting it.... i might be just nervous but please comment and no negative comments please ....