Go get it checked out. I'd be surprised if you tore your meniscus from a direct impact. Like the ACL and MCL, ig tends to be more torsional type movements that tears it. If you tore anything it would probably be your PCL but that's a fairly uncommon injury. Probably just a bruise, but get it checked.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz