Why can't I see as well out of my left eye?!

I got a black eye a few weeks ago from falling off my bike and my face right around the eye socket hit a rock. my eye was completly swollen shut, i couldnt see anything out of it. I saw an eye doctor the next day, and another doctor(i dont remember what he was called) the day after that and he said i fractured i think my orbital bone. I couldnt see out of my eye for about a week until the swelling went down. It was really kinda blurry for a day or two, then it seemed like a could see pretty normal out of it. When I couldnt see out of it, i would have help walking somewhere and doing pretty much whatever from my family and friends. I wore the blind glasses sometimes. I wasnt embarrassed but after a few days i got sick of some of the looks that people gave me and the doctors said i could wear them.
Its been like 2 1/2 or 3 weeks maybe since i got the black eye. Almost all the bruising is gone. All the swelling is gone. But it feels like my eye is being lazy or something. I dont really know how to describe it but i'll do my best. It feels like its going off to the side and more closed than normal even though its not. It feels maybe like i'm kinda cross eyed just in that eye. It feels like i'm using my other eye more. The black eye was stronger before. This has been going on for a few days to a week. But if i really focus with my eye i can see almost normal as before.
If it makes any difference, i wear contact lenses and i have congenital nystagmus(eye movements 24/7 for my whole life and ive had it since birth). And im 18 years old.

What is wrong with my eye and is there sometihng i should do to fix it?