Hi Thanks for posting on HCM If not with a condom, you may not know if you had a retrograde ejaculation or not.During ejaculation, muscle at the opening of the bladder tightens to prevent ejaculate from entering the bladder as it passes from the prostate into the tube inside the urethra.With retrograde ejaculation, the bladder neck muscle doesn t tighten properly. As a result, sperm can enter the bladder instead of being ejected out of your body through the penis. Possible causes of retrograde ejaculation may include: -Surgery, such as bladder neck surgery or prostate surgery -Side effect of certain medications used to treat high blood pressure, prostate enlargement and mood disorders -Nerve damage caused by a medical condition, such as diabetes, multiple sclerosis or a spinal cord injury An endoscopic surgery for kidney stones may not give you retrograde ejaculation.I will suggest you see your Urologist for evaluation. Hope this will help Best regards