After Passing Urine Drops Falls While Standing.

I am 24 years old now. I am suffering this problem from a very long time maybe 6+ years or even more. Anyways i started noticing this when i started college. The problem is when (every single time) i pass urine and i think i am done but actually i am not done. It comes drops of urine afterwards. Some time immediately when i stand up and some times when walking, sitting or specially when coughing and sneezing etc. I do shake the bladder but still the same. I once took a desi medicine from a hakeem (an acquaintance of my father) that benefited me. I got cure but the problem gradually started again. Now problem is same as old. I searched online and got a tip to tackle this problem by messaging the prostate and milking the bladder. It works but i creates another problem. I have sit in bathroom for a long time. Minimum 20 mins are must in toilet for a one urine pass. Some times it literally takes an hour sitting their finishing this process.I want to get rid of this permanently please help.

dr-sajid-iqbal-urologist-lahore

Urine complete examination
Ultrasound kub with post voide residual urine
Get done these test and consult me again.
Tab. Detrusitol 2mg two time a day