Scared of uterine rupture

I’m 27 weeks and got pregnant when my son was around 2 month. I’m so scared of uterine rupture but I go to high risk for GD and at my 29 week scan she said my placenta attached to the back wall so that puts me at lower risk for uterine rupture. But I just worry. Anyone have have a successful second pregnancy with pregnancies so close after c section? I’m having a repeat c section.