I had the same problem with you when I had my 12 weeks scan but the placenta move out of the way at my 32 weeks scan. Thought, I still had a c/s when I was 39 weeks because my daughter turn her head up to be feet breech position. I know that I may not help in answer your question but I would like to give you a support that everything will be fine no matter which method will you hve to do to deliver your baby. C/S is not as bad as you though. Good luck.