Injury To The Shin After A Fall. Difficulty In Walking. Bruised Lump Formation. Need Treatment?

Hi, nearly 5 weeks ago, I fell on a set of concrete steps. My right shin hit one of those steps VERY hard. It hurt for about two weeks to bear weight on my leg. Even after that improved, I would have episodes where walking on it was difficult. I also could not touch it at all until about a week ago without it hurting very badly. Still, my cat so much as rubbing against it is very painful, but I am not having anymore pain when bearing weight. I have discovered, however, that there is a lump next to the area where the skin broke in the fall. I can t say it is bone hard and it isn t even in the impact area. I am wondering what this could be? I still cannot put a lot of pressure on my shinbone when I touch it, but it does take more pressure to make the lump hurt. Also, I did have some bruising that developed below the impact area on the inside of my calf and, while not as bad, that area is still discolored. Thank you.