Info on and experiences with vbac?

I had twins only a little over 5 1/2 months ago and am 5 weeks pregnant with our 3rd baby. I had a cesarean with the twins due to baby b being breach. I would love to be able to experience a vaginal birth but am afraid doc won't let me try so I'm wondering what other peoples experiences with it were and hoping I could get some more useful info on it than what I'm finding online.