I have had a low grade fever off and on (@ 100 degrees), for the past few days. I am aches, but nothing else. My head is clear, I have energy, and I feel generally fine other than the aches and sensitive skin the fever brings. Could it be that I am just not letting my body rest appropriately, or am I actually sick. Can fatigue cause these symptoms? 30 y/o female. No major medical issues other than a hectic life.