What Causes Nausea And Weakness Inspite Of Having Fibromyalgia?

I have been diagnosed with fibromyalgia for many years but I am seeing my symptoms changing. I know longer have the fatigue and joint pains but now I find myself feeling nauseous all the time, if I eat or not eat. constantly thirsty and have no energy to do much after I get home from work. I have had to take a day last week off work because I could barely get out of bed. I ended up sleeping until after 12 and after I got up and ate something I did not feel much better. I have tried lyrica before and all it has done is depress me. I have a metaling challenging job but not physically. I find I have gain more weight and have no strength at the end of the day to exercise. I have seen two Rheumatologist, one told me to avoid bread and the other was just concern that I could have sleep apnea. I am suppose to see my regular doctor tomorrow and I am tired of her not understanding how seriously ill I feel. I take 30 mg of paxil for anxiety, Diazide and HCTZ for meniares disease and ranitadine. I also take a baby aspirin and when I can t sleep I take embien, which all of this medicines I have taken for many years. I am taken care of my elderly parents and also my husband has had several open heart surgery and his health is not well but I know this is not in my head and i just relax it would go away like I am being told.