Hi Jenna,
I don't blame you for feeling scared, being told that you will not get a choice about the way you birth your baby is very disempowering and just plain wrong if you ask me. It takes away any control that you have. I really hope that you can find an alternate OB who is pro VBAC. In the recommend a midwife/Ob thread Kelly has posted with a link to an article with a list of Obs in different states who are pro VBAC.
I too really want a VBAC and hope, hope, hope that I get an Ob who is supportive.