Is The First Think I Need To Do Is Have

Is the first think I need to do is have my top of foot x-ray? I was told when I had partial knee surgery 6 years
ago that I did have some arthritis in the knee area. This started about 2 weeks ago. I have been exercising at the YMCA for 5 months. Could some of the feet exercise cause the arthritis to flare up in my foot?
My email address is: YYYY@YYYY
Thank you