On Friday I started to feel completely exhausted, dizzy, brain fog and muscle aches all over. The worst is in my eyes, its so painful to move my eyes around and feels like a really bad eye strain. I thought I was coming down with something so waited for the inevitable cough and runny nose. Today I'm still experiencing all of the above symptoms along with a bad headache but no sign of a cold or flu. My neck and shoulders feel sore, my back hurts, my eyes, my feet and hands. I feel cold as well. The worst is the absolute crushing fatigue. I woke up exhausted this morning and feel like I am melting into the bed when I lay down. What the hell is this?