Im afraid that I have an illness because I always feels Im full and I want to urinate but when I go to cubbicle I just urinate a small amount. You think what is it? Is it natural? What should I do to remove this?
Always consult a doctor if you're worried about your body's state. As far as my knowledge goes it might be a problem with a bladder muscle which might work too active causing the pressure you feel in your bladder.
Again consult a doctor. :)