Thanks for writing in.
You should definitely be seeing a physician immediately for Xrays and maybe a MRI
scan of the knee as well. The injury
that you have described could not only have led to fractures
but also to torn ligaments which are difficult to treat in the later stages. These torn ligaments can only be picked up by MRIs.
would improve on its own , provided you keep it clean and apply some anti bacterial ointment locally. It is the bones and the ligaments inside that we should be more concerned about right now.
Hope this helps