discomfort in the small toe of my left foot

When I got up in the morning, about three days ago, I accidentally tripped and banged the top and outside of the outer toe(smallest toe) on my left foot.
It hurt very much to the point that I went to see the doctor that morning.
There was mild bruising and swelling that morning which has since gone away.
Upon taking x-rays, he determined that there was no broken bones.
Since then, I have noticed that I can put some weight on the left foot but I have to be careful not to pivot off of the outer toe( i.e. when I am going up and down stairs) Is it possible that there could be a ligament or tendon problem?
These would not show up on an x-ray very well.
I notice that the little toe has more play to it than before.
By that I mean that I can use my fingers to move it from side to side much more than I could have before the accident.
The pain that I do feel is when I stand up on the balls of my toes to reach something down off of the shelf for example.
I will then feel a moderately sharp pain from the underside of the little toe in my left foot.
What could this be, and what remedies can I use to help it heal?