urinary tract infection
"49 year old female. I was not showing any signs of a UTI. My doctor tested my urine and "thought there maybe a possiblity of a UTI." Therefore, as a precaution I was prescribed 100 mg twice a day for 5 days. 

I was extremely tired, a bit dizzy at times, mild headache. Within 24 hrs. I had severe chills temp jumped up to 103, sweated out all night. Seem to be a bit better this morning, temp returned to normal 95.8.  

But still very tired and headache.  I felt better prior as I had NO symptoms.  Trying to stick it out for another 2 days. Sign."