Suggestion on how to deal with doctors?

Alright long story BUT I found out the GYN I was seeing was losing all their doctors and changing where they deliver before my baby comes out (I’m in my third trimester) so I switched to a new GYN who told me they deliver at the hospital we originally planned. I’m high risk and my first apt was calm and they agreed to continue to do a planned c section at 37 weeks which is what my high risk doctor wants. Just went for my third apt and they said “we might go until 39” and NOW tell me only two of their 7 doctors are certified to practice at the hospital I want and they “hope” we can go there. I was blown away and now extremely upset. I’m 34 weeks 6 days and super stressed at the idea of changing GYNs again this late! What should I do? How should I bring this up again to the doctors and have them take me seriously? Ughhhhhhhh?!?!?