Another Body Oddity

I've mentioned before how the bruise is still evident from when I fell through (and then off) the deck last summer.  And I think I've mentioned on here about how, during the last months of pregnancy, my right shin muscle felt like it was ripping away from the bone and how everytime I stepped down, painful jolts shot up my leg?  In continuing the trend of my right leg being effed up, I've now discovered yet another ailment...I have a section of skin beside my knee (about the diameter of a baseball) that is totally numb.  I feel absolutely nothing when I touch it and I can literally stick a fork in it.  That CANNOT be normal.