I had a C Section five years ago, wondering what will happen for a second child birth.

Soo, I've had a C section done five years ago for my first born and I'm so scared of what may happen with the second child I'm going to have in October. I've heard of the placental abruption happening when trying to have a vaginal birth after having a c section. I'm so nervous to even think of that happening it's really tearing me up inside because I could lose a lot of blood that way... and is it possible I won't survive because of a placental abruption? I know that there is a very low chance of that happening but I just can't get my mind off that. I'm so nervous. Please I would like to know how common it is to have a vaginal birth after a c section....