Hi Dear !! Thanks for your query to HCM . Read and reviewed your query and health concerns. IN the given situation of Yours, seem to suffer from-2 health issues-existing UTI with accompanied URTI (Upper Respiratory Tract Infection). Seems while you have runing UTI(urinary tract infection),URTI is additional and seperate infection you got lately. Or -the UTI(its duration not known)if of long standing could weaken the body defences and thus has lead to URTI additional illness. Remedy- Plenty of fluids, Listerin throat Gargles, Rest -till fever recovers Continue trimethoprim-as it would take care of-both URTI and UTI infections. Reply to your specific query- Will this antibiotic help my upper resp issues as well as the UTI? Ans-Yes, the antibiotic would help your URTI issues as well,along with the UTI. This plan would reduce your dilemma from difficulty in breathing. Hope this would help you to plan further of this complex illness of yours. If need be, update any health issue 24 x 7 by a direct question to ME, at following HCM link- Dear, if satisfied,Don t forget to close this query with YOUR pleasing feedback comments to rate this reply and service, to boost the morale of incoming Emergency patients like YOU, at HCM services. If you want to update more details and ask more update queries , You are most Welcome herewith !! Good Day!! Wishing Good Healthy Life in time to come!! Dr.Savaskar M.N. Senior Surgical Specialist M.S.Genl-CVTS