I Have Urine Problem Since When I Dont Remember, I

I have urine problem since when I dont remember, i am 60 now. I have frequent urge to urinate, get up at-least once during the night and it can go up-to six or seven times, it is more in winters. it takes few minutes to urinate, stops between and again wait for sometime. it is followed by drops in the end. Have gone for all possible tests, x rays etc nothing is wrong. would appreciate your opinion