I have had CFS/ME for 10 years, and am lucky enough not to have pain as a symptom (other than migraines). For several months now I have had intermittent rib cage pain. It mainly occurs at night, not every night, but is happening more often. The pain occurs when I lie on my side (either side) and wakes me up. When I roll off my side the pain goes. During the day it can be in my whole rib cage, or just some parts of it. It comes and go. Sometimes it feels like a band around my lower ribs. GP doesn't know what the cause is. Is it likely that this could be related to CFS/ME? Seems unlikely given the length of time I've had it. Could it be fibromyalgia? Would be very grateful for your thoughts/suggestions.