Hi, I'm a 21 year old female, active healthy lifestyle, medical history includes thallasemia, ostomalitis and recurrent patellar dislocations but none of these limit my daily activities. I had an appendectomy on Wednesday just gone and have been home since Thursday evening, the surgery went well and I am a lot more mobile these last two days with little pain in my abdomen other than when I cough and laugh. However, I've been very lethargic and having intense cold sweat at night to the point I have to change the blankets etc in the middle of the night, no fever as such but just feeling hot and cold and sweating. Does this mean anything I should worry about or just more bed rest?