My friend acidentally hit me very hard in the eye...?

My friend hit me in the eye. It was pretty hard and it make an imprint in my vision; sorta looks like when you look into a bright light or camera flash and theres a little image of that light still in your vision afterwards when you look around? anyways, she hit it sorta at the bottom in my right eye, and I can see something sort of a greyish colour like after loooking into a bright light in the bottom of my eye....? Will this go away..? How long will it take.? Its not really affecting anything, its just really bugging me.., i got hit about 10-15 mins ago?