Suggest Treatment For Sudden Body Pain Weakness And Headaches Apart From Chills And Sleeplessness

I am 66 just had open heart triple by-pass 2 years ago. I have been feeling fine until 2 days ago. When I started feeling aching all over, seems like I feel every nerve ending in my body, headaches and very weak. I get chills and at night I cannot sleep because my eyes are constantly moving.