I hate google when it involves me and a medical problem! I alwasy get the most horrible results! I got bit by two fire ants on my arm in May, and talk about nightmares! I thought my arm was going to fall off and take a leg with it!
As mentioned your doctor will monitor you and hopefully as you get further along the placenta will move up and out of the way!
How far along are you? I was diagnosed w. placenta previa at 8 weeks and by 20 weeks, it had corrected itself. It's very common that as the baby grows, the placenta moves and the previa corrects itself. Good luck, and dont be too scared. I was freaking out as well until I realized it is VERY common, and 7/10 times corrects itself LONG beofre you are ready to deliver. If not, the Dr. knows what is going on, and monitors you closely, and schedules a c-section.. Good luck and keep us posted!