S.A.
I don't have an OB recommendation, but I have a wonderful midwife, who takes all the time you need and answers every question (even multiple times b/c I forgot I'd asked it already!). She has a great birthing center in Garland. Her name is Joyce Nelson, and her practice website is: www.fcmcdallas.com. She may also have recommendations for great OBs as well, as she works with and refers to OBs in high risk cases.
And no, it is not crazy to switch docs at this time. Better now than a few weeks before you give birth!!!