I had Grade 4 complete Placenta Previa with my 1st, was in hospital for a month before my C/S in Feb and I had no bleeding.. I was lucky. The Obs told me I could give birth next time if I wanted to, they never said I would have a higher risk again. However I understand having scar tissue gives you a higher chance that the embryo could attach itself there, our hub was IVF as well. I'm starting to think IVF increases your chance if PP.