hi frankie, urine infections are common in females at your age. usually most resolve with a 3-5 day course of antibiotics, yours is taking a bit longer. So reasons for this have to be found out. One common reason is inadequate or improper antibiotics (since you are being treated by a urologist
, I am sure this is not the case). Another is bladder outflow obstruction. This can be ruled out by sonography
(high post-void residual urine) and uroflow. A rare cause can be non-bacterial infection ( for eg tuberculosis
). IC is very unlikely to start at this age. Continue follow-up regularly with your urologist. Keep fluids limited to 1.5-2.0 liters/day, decrease tea/coffee/fuzzy drinks. You may also feel better with some anticholinergics if not already taking. (I am not sure what sort of anti-spasm medicine u have been given). Take care.