Is it possible to have your traditional Medicaid change to Amerigroup starting in the month of April? Before my son I worked with Medicaid for children, but not pregnant women so I don't know if the same rules apply. What I can remember is our patients would be switched to traditional Medicaid if they forgot to renew in time, or it was their first time to get Medicaid. Then after a month or so of being on traditional Medicaid they would be switched to a managed Medicaid like Amerigroup. If it works the same for pregnant women I would call Medicaid and make sure they put you back on Amerigroup for the month of April.
Also you may try to contact a financial counselor at the hospital you were planning on delivering. They may have some contacts to help you in this situation. I just delivered a month ago at Presby Plano and I know they have financial people just for maternity.
I'm not sure if my physician takes Medicaid, but if you can't find one, and you can't get back on Amerigroup for April let me know and I can give you her contact information. Good luck.