I am a 35 y-o- male and for the past 7 weeks now I have been having strange symptoms like nausea, dizziness (extreme at times), headache behind the eye and sensitivity to light, joint/muscle aches and stiffness mostly in hands and feet but occassionally like a full body flu-type attack, weakness in wrists, cold feet and hands that feel like they are plunged in ice water when i am seating in the office, constant feeling of cold so that I just can't get warm, occasional hot flashes and chills, exhaustion and sleepiness all day but hard to stay asleep, and memory problems/disorientation like a brain "fog", flashes and shadows out of the corner of my eyes. in the past i have been treated of pneumonia on three occasions. when i went to my GP he said i had chest infection and was given antibiotics and afterwards he said my chest was clear. but my problem is that these symptoms are still there, i feel weak, dizzy, joint pains and weakness and fever. please help me.