Numb

For almost the past week I have had this weird numbness on my right shin.  It seems to be very localized.  Occasionally it is tingly.  I think I may have a pinched nerve or something.  I am going to the clinic this afternoon to see what they can tell me.  As I was watching a movie last night I thought my face was going numb too.  What is happening to me?  Does this happen to everyone as they get old??  What else do I have to look forward to?