20 weeks with Placenta Previa and at risk for Vasa Praevia

I'm currently 20 weeks pregnant and found out at my 16 week appointment that I tested positive for neural tube defect. After further tests and a level 2 ultrasound they found out my baby boy is perfectly healthy but I have Placenta Previa and I'm at risk for Vasa Praevia. My doctor said they are going to keep a close eye on me, but I might have to have a C section between 32-34 weeks. It's my first baby and I don't want to stress out more than I have to, so I would appreciate no horror stories because I still have at least 12 weeks to go. But if you have any general information about it please let me know.