You seem to suffer from an entity called post void dribble. It can be due to multiple causes like bladder outlet obstruction, urethral muscle weakness, overactive bladder or sometimes simply a reflection of an anxiety state.
Next Steps
Better not to neglect the symptoms as you seem to be suffering for some time now. Consult your urologist, who will evaluate basically whether it's due to some physical issues so treatment can be directed to it.
Health Tips
For more helpful tips on awareness regarding urology and men's health issues, kindly log onto www.drprabirbasu.com