Severe Body Ache, Nausea, Difficulty In Getting Sleep, Have Constipation, Normal Results For ECG, X-ray, Sonography, Blood Work. Suggestive Treatment?

hello sir, my mother is suffering from svere bodyache, nausea .she is of 44.she is not able to sleep properly due to pain n especially in the mrng. she feels vry uneasy.. she feels pain in every body part sometimes more svere in stomach but sometimes not in stomach rather in whole body... she is suffering from constipation also.there is one thing very strange that since she has been in such condition for more than 10 years and inbetween this long period she was pretty well for 2 year or 1 year or 6month many times as if she has not fallen ill. we have taken the treatment from every known place.. doctors said that she is medically fit... her reports like ecg .,blood reports, x ray, sonography are normal in outline... but still she is in big trouble... plz. make a suggestion what should we do????