Lissaj, It's nice to meet you & welcome to the forum. There is actually a big difference between Fibro & CFS. While they have many of the same symptoms, they have many that are different. Fibro is an illness with the main symptom being pain with a componant of fatigue. CFS is an illness of overwhelming fatigue with a componanat of pain. I would suggest you look up both on the internet & educate yourself before you go see your Rhuemy. Knowledge is power & you will feel more sure of yourself if you are armed with this knowledge. It can be very confusing at first, I know, it took me awhile to separate out my different symptoms for each illness. I hope it doesn't take you as long as it took me. LOL
Many hugs, Denise