I used to deal with severe pain due to lupus in my joints and muscles. I was taking Ultram, Darvocet, and Flexeril. And to be honest, they didnt help with the pain. The only thing that helped was Prednisone. Since Early september I have been on 60 mg of prednisone due to Lupus Nephritis and I could get hit by a semi truck and probably feel very little pain.
If you are having joint/muscle pain make sure you keep as warm as possible. Maybe you can use a heating blanket or heating pad. Also a warm bath with Epson Salt might take the edge off the pain just make sure you have someone around to help you get out incase you get too relaxed. I also purchased a pregnancy pillow and I molded it around me at night depending on where I was in the most pain. I know some more people will have some advice on little ways to relieve some pain. I hope you get some relief soon, I am so sorry you are in so much pain.
Do you have Lupus or MCTD/UCTD? If so are you on any meds besides the Lyrica? I know the Ultram, naproxen and cyclobenzaprine are for pain but anything to help keep things under control?