It started with strained muscle in my buttocks - thought it was due to walking up a steep hill. Although it has partly moved to my lower back, I don t think it s sciatica as I never had pain down the back of my legs - some down the front but that would be consistent with the walking up the hill. Symptoms started Sunday, went to the Dr (mine wasn t available so saw the nurse practitioner Wed.) Thought I might also be starting with a UTI which was confirmed. I also have been having a semi constant pressure headache along with dizziness - did mention that to the nurse that took vitals but forgot to mention it to the NP. Called yesterday and requested pain meds. I can t take NSAIDS or Naprosyn. She gave me Vicodin which I took last year when I had my knee replaced, and never had an issue, but have thrown up the last three (but I haven t been hungry so not much in the stomach - did eat a few animal crackers with one dose and a pudding with another.) My dr office is closed for the weekend and if I had to I would go to urgent care, but hoping I can get some ideas. Been using a heating pad. No idea if the soreness, headache and UTI are related - NP didn t think the UTI and lower back/buttock pain were.