Help on telling my parents

I’m 7 weeks pregnant I’m 17, just graduated and I’m going to college my parents don’t know I’m pregnant yet I live with my dad my mom is in jail I already told her she’s supportive but she can’t really help me right now. I need help on knowing how to tell him and when to tell him I know he’s going to be mad because he had different plans for my life and this isn’t what he wants he’s kind of strict, any suggestions on maybe how to tell him??? I know I need to soon I can’t hide it too much longer