I have had a dull headache, slight nauseous feeling and listless for several weeks. I have no fever, but can't seem to shake the symptoms. Strangely enough my mother is also experiencing the same feelings. I have just retired and have a good outlook on things in life. No depression or anxiety, my mother is happy and is 86 years young. Loves taking care of great grandson and my dad. I know part her energy level is age, but the headache and nauseous feeling we both have is strange. Any ideas?