Hi thanks for contacting HCM.... First post ejaculation after sex urine examined. If shows sperm in urine problem is retrograde ejaculation....... If sperm not seen in urinary seminal vesicle abnormality and ejaculatory duct obstruction ruled out by transrectal ultrasonography..... Also rule out cystitis like infection by urine examination and USG.... According to cause treatment guided. If pus cell present after ejaculate urine then antibiotic needed. There might be chance of obstruction of ejaculatory duct after infection with chlamydia or gonorrhea or TB.... So consult surgeon or physician for health check up and accordingly investigation... Take care.