bumps on ankle

Hi there.
I have two small, soft bumps behind my left ankle bone that appeared in May.
I massage them and they do not go away.
I’m wondering if you know what this may be and how to get rid of them.
I did sprain my ankle a year ago and run 5-6 days a week.
Sometimes after a long run the lower portion of my ankle bone feels bruised and I am unable to walk without pain without wearing slippers or some sort of cushioning on my feet.
If I massage my feet it is better, but the bumps are still on my ankle.
I hope you can help.
Thanx.