I have had about 7 of these bouts happen to me. Let me start here, I feel fine then it starts with me feeling chilled, then a minute after I am l looking for blankets and i shiver for 2 to 2 1/2 hours slight fever, horrid headache, dry heaves then for about 1 1/2 months I am very slughish . I have a headache everyday and this just really intensefies this. I then have problem staying warm so have to keep a blanket handy. Someone might say just put a sweater on , well when i do get warm I want it OFF me. I am seeing a neurg. but I was wondering if anyone is experering anything like this. My doctors and my neurg when I tell them what is happening to me act like it nothing. I am pushing more towards migranies.