Severe muscle spasms

I was diagnosed with Parkinson's about 12 years ago. I have always had a tendency to freeze when my foot hits something unexpectedly. My muscles will lock up and sometimes I even fall. But here in the last couple of weeks it's gotten much worse. I can be standing in the kitchen and all of a sudden seems like almost all the muscles in my body spasm and I usually fall and I have a really hard time getting back up due the to the spasms. After a couple of days as slowly stops for a couple of days and it starts again. Is anyone had this problem? I can't see my neurologist till January. I am 68 years old.