Just had a uti now my neck back and head hurt what do i do?

Uti: make sure you are well hydrated and on antibiotics. people with uni can develop pyelonephritis and may present wit back pain, fevers and headaches( because of fevers). please see your doctor if you are unwell as the condition has potential to be serious , if untreated.

Separate issues: if you suddenly have headaches and myalgias during flu season, there's a good chance of that diagnosis. Watch for some nausea and possibly vomiting and or diarrhea, but not necessarily. Your complaints could also be a side effect of the antibiotic used for the UTI. If you still have the UTI, and didn't seek treatment, the UTI could have gone to your blood stream causing your complaints.