Lately for about 2 weeks I have been very fatigue. I get chills throughout my body one minute then I get extremely hot once I cover up. Im so tired but I cant sleep all night lately. I also keep feeling like im getting a little head cold but it doesnt go beyond sore throat or aggravated sinus. I had pneumonia about three weeks ago but I figured I was over it. What is it that could be happeneing? I also had a partial hysterectomy 2010 and have been experiencing bloadedness and cramping. I dont know if this is all connected but I'm starting to get concerned