hi.. i have understood your concerns and problems and answering accordingly.. u are of 29 yrs and unmarried, u have not mentioned that u are masturbating or not? actually if u are not masturbating then your problem is explained by it..your body is producing semen on regular basis it is like a factory.. but when it is produced continuously and u are not removing semen by masturbation or by sex then it will overflow with time.. it will overflow whenever u have erection like erotic pics or in sleep when penis gets hard or when abdominal pressure goes high like during passage of stool and urine... so it is normal physiology of the body..u are alright.. u do not have any serious sex disease or anything..dont worry and dont think like that.. if u really want to get rid of this problem then i ll suggest u to get married or masturbate frequently like twice or thrice in a week.. so..i feel that this much information is enough for u to understand your own problem..and actually not a problem it is a normal phenomenon.. i hope u ll find this information helpful..best of luck