Sometimes procedures like prostatectomy, transurethral incision of the prostate (TUIP), transurethral microwave therapy (TUMT), transurethral needle ablation (TUNA),
laser therapy of
prostate and transurethral resection of the
prostate (TURP) may also cause such symptoms. I suggest you to consult a urologist and get some investigations done. These include blood sugar levels, blood tests, ultrasound of the prostate, ejaculatory ducts and seminal vesicles and BP monitoring.
I hope it helps.