Hello and welcome, Thanks for your query. At first, let me inform you that during a UTI you lose a lot of fluids and other valuable contents in your urine, this could be causing your stiffness and myalgia (muscle pain, cramps, etc.). This needs to be replaced, with the help of fluids. Drink a lot of water and what we also prescribe is a solution of potassium chloride, which also greatly helps in relieving you of your symptoms. Now to address your recurrent UTI s, you need to understand that a UTI is not always just caused by a simple infection. There could be many causes to a UTI. Let me give you examples: An obstruction in the flow of urine starting anywhere from the kidney to the bladder can cause stagnation of urine. And in the urine is bacteria, this can lead to a UTI. This obstruction can be a stone, a tumor, etc. Unless this cause is treated, there is not point of treating the UTI. I hope I am succeeding in explaining this to you. Kindly request for an ultrasound that would help visualize any such cause, and also discuss the same with your doctor, so he can also think on the same lines. Recurrent UTI s most often have some underlying cause. I hope I have succeeded in answering your questions, you could write back to us anytime for further clarifications. Best wishes.