Complete Placenta Previa ...

I went for my check up today, I'm 21w and 4d with my 2nd pregnancy! I was told today that I have complete placenta previa ... I didn't know there was such a thing and now I can't stop looking it up. I have another ultrasound at 28 weeks to see if it's moved at all. how many of you ladies have had this but your placenta ended up moving and you were able to have a vaginal birth? I loved my first labor and would love to experience it again but if a c-section is in the best interest will go with it. give me some good news ladies!