Three weeks ago I suddenly felt like a bus had hit me, was in bed for three days with horrendous aches, especially my back and legs, headache, nausea, sweats, chills, etc. I slowly recovered but I have since been getting one-day symptoms than then go away, not as bad, just tired and uncomfortable. Today I feel exhausted, with a headache, slight cough if I breath deeply... I'm thinking this horrible virus must be still in my system and pops up when I'm tired... Anyone else??