The risks are very low compared to the risks of a c-section and ANYONE willing to deny that is not educated. Any ob when asked, will tell you the main risk of vbac is uterine rupture which is quite small 0.7-2% risk, BUT of that 0.7-2% only a very very small percentage of them are catastrophic (loss of baby or mother). On the other hand the risk of c-section (and you sign a form stating you are aware of these at the time) are incredible, injury to organs, bowel perforation, uterine rupture, injury to baby, hemorrhage, hysterectomy, blood clot, embolism, stroke, death, sids risk is higher in c-section babies, the risks go on and on, especially if you are planning more children, risks of placenta accreta and other issues raise!.
Educate yourself with real statistics, not stories from people who "know of someone that..." or from fearful obs. Many obs arent willing to take the risks due to their steep insurance costs and risk of malpractice. Seek a midwife that has seen many vbacs, even if you want an ob with hospital birth (which I've chosen because that's where I feel more comfortable for my vbac ) but if nothing else a midwife can share some information with you.
Many drs will tell you because you had a "failure to descend" that you probably have cpd (cephalo-pelvic disproportion) where baby can't descend because the head is too big to fit in the birth canal or pelvis. True cpd is rare.
My point is, educate yourself on everything. What happened in your other labors, what you can do now to prepare, what the real statistics are and what the TRUE risks are. AND not only what is best for you but also baby. Even if you find a dr willing to allow you a TOLAC (trial of labor after c-section) the hormones released are good for the baby and help your baby prepare for the outside world.
I personally am choosing to vbac this time. I had a c-section with my daughter after the "cascade of interventions". I've been studying non stop and I've interviewed 12 obstetricians and 3 midwives in the greater Houston area. I've seen the literature, I've learned and begun to understand the human body and how labor works. I'm taking many steps this time to ensure I've done everything possible to get have a vbac. I'm eating healthy, exercising and staying very fit, stretching and yoga, regular chiropractic care, healthy pregnancy weight gain (25-35 lbs total, more like 20-25 lbs for me personally because I'm so small already 93 lbs prepregnancy so I don't need to gain as much as others). All these things can make a difference. Especially chiropractic care, making sure your spine and pelvis are in perfect alignment.
I hope some of this information is helpful. Ultimately it is up to you to find out the real facts and make the best decision for you and your baby! Good luck!!!!