I am 37 years old when I go to WC I have to stay for a long time because not all the urine come out, but remains a few drops of urine in the bladder. I went to three doctors, the 1st doctor described to me massage by electronic device, the 2nd doctor said that he must see inside my pennis by camera that enter through the penis , the 3rd doctor gave me medicine 2 time each for 15 days.What is your recommendation please ?