I agree with mamaofonetrying42. If you feel you're not being appropriately taken care of by your OB, you should find another. Find someone who *will* run tests and do ultrasounds and let you know if there's a problem.
I tried to look up via Google information about your condition, but haven't had much luck yet. If your doctor in Michigan was worried about your uterus, your new OB needs to be informed about this. Can you have your medical records sent to your new doctor? If your new doctor is aware of your situation, maybe he/she feels that it is not as severe as the last doctor. Either way, if it worries you and increases the risk of yourself and your baby, it is something you need to reiterate to your doctor, so perhaps you can get those tests done and he/she can see that it is or is not a problem.
The best thing I would do would to contact your Old Ob and see if he could send your records to your New Ob. And then you two can go over it together! But if you feel as this New Ob isnt providing what you think you need, I would find a new one!
Well it seems like there is nothing wrong with your uterus if you have carried the baby to 33 weeks already. Did your new ob do a ultrasound? Perhaps they didn't see anything unusual and that's why they are considering you to be having a "normal" pregnancy.