My insurance changed and my former obgyn was now considered out of network. SO... I had to call around 8 months pregnant and was told some were not accepting new patients. I ended up choosing to go with a family Doctor (who is still my family doc now :) ) If you go into labor they cant deny you care.
I assume you don't want to get too personal here, but your questions are leaving a lot un unanwsered questions.... Is this your first child? How far along are you and if your in second or third trimester, why were you not getting care all along? You say your on medical, is that like a state funded insurance? Because in most cases major medical centers and hospitals accept that. It is not the law to have to get a Doc,and deliver in a hospital, a lot of people choose other options. So that being said I assume you must have a social worker of some sort who sees your unborn baby is at a risk of something?... Why would your dad and sister get in trouble if they help you...???? Uness your doing something illegal and they know about it, or they are doing something illegal I'm not understanding this.
Try calling family Doctors to get in. once you get in for an appoitment please ask for help for whatever is going on, so that you can be pointed in the right direction to get back on track and do the best for you and your baby or children. Best of Luck!