I'm 29 years old recently I have been treated for cystitis (uti) urologist prescribed to take antibiotics (nitrofurantoin) for a month and k-mac tonic for ten days, the symptoms were controlled the second day I started to take those but i've completed the medication period with those tonic and tablets but for me it didn't cure completely, I still feel it persists when I urinate. Bacteria culture report was taken recently it showed negative growth of bacteria. Blood test done urine test done doctor said all are normal. I still feel little discomfort while I urinate what should I do? Any guaranteed treatment for it or any diet I have to follow or this discomfort persists? I still feel the infection growing in me.