I had a uretheroscopy 48 hours ago to remove a kidney stone lodged in the prostate.Everything is now well, no blood or pain when i urinate, however after masturbation i do not seem to have any semen whatsoever, during ejaculation there is only a small amount of clear liquid that is coming out My doctor has put me on antibiotics and a pill that relaxes the prostate so i can easily urinate, and tells me that the lack of semen is because of this , however i am not convinced.Is this normal ?? Please help.... Thanks!