Well if you hear a sound that goes along with vehicle speed now, a wheel hub could have been damaged. A friend of mine had a ford fiesta, and hit a curb with the rear wheel from sliding in the snow, and had his bearing do the same thing. The alignment only being off that slightly may not be visible damaged, it's probably very slight to the point where an adjustment is all that's needed. Of course a full inspection should be done though. Hard to tell what's really going on from here.