Hello. Over the last three nights I ve had moderate fevers hovering around 101.7-101.9. They begin around 10pm, and break around 6am. The fevers also bring chills, sweats, and achy muscles. During the day I ve been having headaches (made worse by bending over or standing up) and a sore throat (unknown if post-nasal drip is involved). Taking ibuprofen seems to temporarily lower the fever and dull the headache enough that I can sleep, but sometimes the medicine doesn t seem to help the headache much. The headache is sometimes focused on the back of my head, the sides, or the top. Should I be concerned about the prolonged fever? Is there a reason it would only come at night? How can I stop this headache? Thank you for your help.