Hi cyma! As scottma said, you now need to see a tmj specialist. This is something I have dealt with for years. Knowing about your perio condition, it is possible that your teeth have shifted throwing off your bite. I am know that is what made my TMJ worse. So, although my periodontal condition is greatly improved, I now have lots of new issues due to the shifting that occurred.
I feel for ya!
Seeing a tmj specialist is advised.