K.P.
No real advice except do what you can to stay off of the internet... your doctors will be the best resources for information and support. Remember that you can ALWAYS call the doctor's office and ask for a consultation to discuss your concerns between now and the procedure. Our "situation"was very minor (placenta previa), but I was in a panic and spending 15 minutes with the doctor talking about the "what ifs..." really helped.
Good luck and I hope you hear something positive.