The prime duty of your obstetrician is to ensure the well being of both the mother and the baby.the doctor did what was right for you at that time.rsason being during labour when the frequency of pains increase ,sometimes, the baby doesn't tolerate the pain and its heartbeat begins to fall down.in such cases an immediate caesarean is performed to save the child as you never know that giving any further trial can lead to a still born baby.
Second ,during pelvic examination, the doctor can well access that is the pelvis of the mother adequate to allow swift delivery ofthe child as after thehead gets engaged in the pelvis the doctor can judge with digital examination that the headcan pass or not.because when the child is born the bones in its head are not fused.they overlap each other to make way out of the pelvis.any swelling or fluid collection can pose difficulty for this.so keeping in view both the conditions your doctor did what was best for you.
To try a vbac i would recommend that gap between your deliveries be atleast 18 months.second the scar thickness should be accessed before giving a trial for vaginal delivery
.in case of thin scar line a voluntary caesarean section
should be done.your doctor can guide you better after accessing your status then,