I Have A Bruise Like Discoloration Towards The Middle Of

I have a bruise like discoloration towards the middle of my right leg and i can feel a lump beneath the surface. I thought it was a bruise I may have somehow gotten, however, it has been a couple of weeks and the discoloration and lump has not gone away. Today, I'm feeling weird sensations in my leg and as i rubbed it down i realized it was coming from the very area