Before two months I had very frequent urination , urine culture was negative Uroflometry was normal Kidney function test Normal But scan shows , urinary. Bladder wall thickness 4.5 mm And mild chronic cystitis .. Dr prescribed me  1 niftas 100 g tablet daily for 3 months , but I couldn't take more than 20 days due gastritis , other digestive issues , But it showed me good result , But I stopped taking tablet after 20 days Almost after 2 months now again I feel the symptom is starting again, I don't feel the satisfaction after passing urine , Is taking antibiotics the only solution for this what should I do ?