Doctor wants to take me off of my oxycontin and oxycodone and has started by 10mg perday, isn't that

I have fibromyalgia, DDD in the neck, spurring, arthritis, hep C pain.  My doctor and i had agreed to 3, 20mg oxycontin and 6 oxycodone perday particulary in the winter months and until my pain subsided.  Well it didn't and got worse.  Now he has cut me back in 4 weeks 10mg of oxycontin per day.  What he did was give me even worse pain and now I can't sleep.  Also, did I mention that this is my 4th year in a very difficult menopause every sympton, including joint pain, very unbearable in the morning.  Do you think also, the Ultram, added to my oxycodone would be a help, I hear it is good for fibromyalgia