Can a UTI heal without having to take antibiotics?

You need to go on antibiotics ASAP. After that, go on Probiotics like Jarrow formulations Jarrowdolphus with FOS which you can get on line or at any good health food store. then, always take 4 oz of non sugar (or corn syrup) sweetened cranberry juice just prior to having . this will help keep you from having more UTIs.