Urge to urinate. Medi ine for 3 months.

Hi i m a 20 year old male.so this all started 1.5 year ago one day when i woke up in the morning i felt constant urge to urinate.when i urinate i have feeling of unemptyness then i was dignosed with kidney stone for which doctor gave me some ayurvedic medicine and it did not show in another ultrasound after three month of taking medicine but still i had the same urge to urinate all the time so i went to a urologist he did my endoscopy he found nothing only high bladder neck work which he gave me medi ine for 3 months.then he gave me beta blockers but nothing helped.after this i went to a ayurvedic doctor he said i have some kidney infection,i ate his medicine for 5 months but nothing has changed. In my KFT uric acid was little high then normal and Na+ was little less than normal.i have never experienced blood in urine.i feeling burning sensation in urine sone times like once in a week and sometimes i have lower back pain not always mostly when i wake up.please help me i really need it.