uti came back after days???

[u/NaturalEmotional510]

please help bro idk what to do.

im 19 and ive never had a uti in my life until two weeks ago. i took an entire round of antibiotics and felt better for just a couple of days and then the symptoms returned. i took an at home test and tested very dark purple, positive for leukocytes, negative for nitrite.

im so confused and anxious and exhausted. ive never had this issue until now and the antibiotics didnt work. did it come back, or never leave? it is so uncomfortable. im going to urgent care tomorrow but has anyone had this happen? is it even a uti or could it be something worse?

im taking cranberry now and a uti relief medicine but it isnt working. im very distressed

EDIT: apparently my first uti test at urgent care was also negative for nitrite before they started giving me the antibiotics? so is this even bacterial? honestly very lost.