For The Past Week To 10 Days I Have Experienced

For the past week to 10 days I have experienced intense chills for sa a half hour or so which cause be to breathe heavily followed a while later by sweats. These were occurring throughout the day and night but have now seem to be getting less frequent and less intense also. I thought flu of course but no nausea,throwing up or diarrhea ! Any ideas. I know it's pretty vague but I feel like crap and have for a while. Oh and also have the normal muscle and body aches of flu.thank you