I have been having fatigue, overall weakness in my body, dull pain in my legs, and a little difficulty swallowing. Sometimes even sitting up can be difficult because I feel so exhausted. The fatigue and weakness and dull pain in my arms and legs has come and gone for about 8 years now. Sometimes I feel completely well and sometimes I lack so much energy that even walking a short distance or doing a small task is difficult. What are your thoughts? Thank you!