hi i am 39 years old man have 3 kids , one year before i have lower bach ache and also have problem of no sexual desire , errection was also not good and have timming reduced ,also have pain in urinary tract , when urine comes it is hard to hold it ,if do not do sex for a week it seems that semen is comming in urine and pain in testies and when comes near to wife for foreplay excessive discharge of semen before sex and back pain starts at that time ,i feel my self week ,kindly suggest what to do