Hello and welcome to HCM.
Thank you for your query.
The white semen-like discharge you have been experiencing could be associated to infections. This is not semen, and if it were, it would be detected. The most probable cause would be:
-Sexually transmitted infections
I would first of all like to ask if you have been experiencing any other symptoms? And whether you are sexually active?
I request you to re-visit your doctor and get a urine culture investigation conducted for your urine. Once an infection and infection-causing organism is found, you will be accordingly treated with the most appropriate medication reported by the urine culture examination.
If a UTI has been ruled out, undergoing a screening for all sexually transmitted infections would be a wise next step.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.