Hi everyone, is it alright for me to be terrified of giving birth via Vbac after c-section concedering how low the risks are?

Let me explain a little about my history, in 2009 I gave birth to my daughter via vaginal delivery, 2016 I had to have a c-section after a failed attempt to turn my son (he was breech) and now I'm 34 weeks, 5 days pregnant. My doctor said I'm an excellent candidate for a vbac seeing as I have had a vaginal delivery before but I'm terrified that something May happen to me or baby.