Ouch!!

Ugh! Can't believe this happened, well actually I can but was hoping my eventual weight loss would help!
I have had a 'bad' left knee since I was about 8. I had to do some strengthening exercises at the time. Since then every now and again I would have a niggling issue for a week or two. Then ten years ago I had a fall while playing footy with the kids, the kind where you step on the ball and fall. Was very sore for about 6 weeks that time. No haven;'t spoken to the Dr about my knee since I was a kid. tut tut.
Anyway last few weeks the niggling has been back and then it just got worse until today it's completely gone to the point I can't straigten my knee out at all. Have got a GP appt tomorrow...if I go!
ow ow ow!!!!