I'm so sorry you're going through something similar! It is really horrifying to me that you haven't been able to find anyone to see you. And I can just imagine what will happen if/when you deliver in a hospital - I'm worried about that myself, if for some reason I need to go to the nearest hospital before I can get an appointment, and I have a stack of medical records to bring with me. I can just imagine hearing "Why haven't you been seeing an OB since your diagnosis?" and I will have the hardest time not punching anyone who tries to act like that is my fault.
I think part of it is this area. My mom is a nurse in an OB/Gyn practice in western Michigan and she was pretty shocked that I'm having trouble transferring at this point, since that's not normal around there. She also mentioned that the teaching hospitals there have OB resident clinics that I guess will see any patient. I've tried to see if there's anything like that here but I haven't really found anything (except maybe at Temple? not sure if you're close enough to be familiar with Philly hospitals; I do not want to deliver there).