Gabby, best you can do is stay strong and positive. You're in a waiting game, and it could go either way.
Very often, the placenta does migrate upwards and away from the cervix. But there's nothing you can do, except abstain from "anything that involves the vagina", as you say, and pray for the best.
Best wishes. This is hard.
I found out I had placenta previa at 12 weeks. At my 20 week ultrasound it had completely moved up and out of the way. I hope the same for you!
My friend had it her placenta moved up n it was fine.