Help - I have an unusual lump in the back of my lower leg. About a month ago, I fell over and bruised the area, but a couple of weeks ago, I realised there is a lump below the skin which feels quite tender. It's nothing like any other bruise I have ever had, and why is it still hurting after a month? I'm worried there's something more wrong with me. Should I go to the doctor, or just wait and see if it gets better?!

Thanks for any advice. I need to stop panicking!