Prostate

1. Where does semen get stored before ejaculation?

2. What happens to the semen after a very long foreplay, if there is no ejaculation?

3. Are there any repercussions, if there is no ejaculation [after a very long foreplay including intercourse]?

Response from Dr. David Knowles, Urologist for HealthCentral
The semen is stored in sack-like organs called the seminal vesicles which sit right behind the bladder and just above the prostate. Their sole purpose is the collection and storage of semen prior to ejaculation and expulsion of semen during ejaculation. They are very similar to the bladder, as they act as a reservoir for semen. There are very few diseases which affect the seminal vesicles. There can be problems if they become blocked. This can lead to infertility problems. They can occasionally become infected which is usually associated with an infection of the prostate, prostatitis. This can be painful and may require treatment with antibiotics. The seminal vesicles may also be invaded by prostate cancer.

Nothing really happens with the semen if you don’t ejaculate after sexual stimulation. Prior to sexual stimulation, the seminal vesicles are already filled and ready for ejaculation. If you don’t have an orgasm, the seminal vesicles don’t contract in order to empty. So they simply continue to store the semen until a later date when the person ejaculates. During sexual stimulation, there is some leakage of semen from the seminal vesicles into the urethra. This fluid can be expelled out of the penis without having an orgasm or ejaculation. This fluid contains sperm which can fertilize an egg. This is why the rhythm method, or withdrawal of the penis prior to ejaculation, is a poor form of birth control. What I believe this person may be referring to is the commonly called “blue balls syndrome.” This is the uncomfortable feeling that a man can have after being sexually stimulated and not having an orgasm. This discomfort is caused by continual contraction of the muscles of the urinary tract and the pelvis. These muscles contract and prepare for ejaculation during sexual stimulation. If the man is brought to orgasm, then these muscles contract and relax repetitively with great force. This is what causes ejaculation. After ejaculation, these muscles relax due to fatigue. If you don’t ejaculate after being sexually excited, these muscles stay contracted for a period of time and cause pain or discomfort in the pelvic area. This pain is commonly felt in the testicles as a pressure or ache and thus the term, “blue balls” was born. Contrary to popular belief, this does not cause any damage to the urinary or reproductive tracts but can be uncomfortable to the man.

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