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Question
I'm trying to avoid ending up on the Maury Povich show.  I got a vasectomy approximately a year and a half ago.  Following the vasectomy, I provided two specimens a few weeks apart from each other.  The first specimen still contained sperm.  After the second specimen, I was told I was in the clear and could rely on my vasectomy as sperm was not detected.  Fast forward, a couple days ago, my girlfriend tells me she is pregnant.  She is very aware I had a vasectomy a year and a half ago.  Come to find out, she was on a medication called Clomid that stimulates ovulation (I was under the impression it was for her kidneys).  So today, I go submit another sample to my urologist office and they came back and told me, I was still in the clear and could rely on my vasectomy.  

So my question...is it possible at all for 1) sperm to periodically make it through even though I was told before and after that I was in the clear, 2) for the vasectomy to somehow reverse where I am fertile and then reverse again where I'm not fertile without any type of procedure or surgery inbetween.  

Thank you for your time.

Answer
Shaun:

Well, in medicine almost anything is possible so it might technically be an extremely remote possibility, but realistically there is no reasonable way you could be the biological father of her child with a negative sperm count before and after.

There is no renal indication for clomid.  It is used exclusively to increase fertility.  It has no other purpose.  Sorry.

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Stephen W. Leslie, MD

Expertise

Questions concerning erectile dysfunction, kidney stones and prostate disorders including prostate cancer. I have a special interest in kidney stone disease prevention.

Experience

Full time practicing urologist with 30 years experience. Associate Professor of Surgery and Chief of Urology at Creighton University Medical Center. Editor in Chief of eMedicine Urology internet textbook. Author of only NIH approved book written for patients by a urologist on the subject of kidney stones "The Kidney Stones Handbook". Inventor of the "Parachute" and "Escape" kidney stone baskets and the "Calculus" stone prevention analysis computer program.

Organizations
American Urological Association, Ohio State Medical Association, Sexual Medicine Society

Publications
Men's Health, Journal of Urology, Urology, Healthwatch Magazine, Emergency Medicine Monthly, eMedicine, "The Kidney Stones Handbook", and numerous articles in various newspapers. He is also the editor of the Urology Board Review by McGraw-Hill used by urologists to study for their Board Certification Examinations.

Education/Credentials
Graduate of New York Medical College with residencies completed at Metropolitan Hospital New York, Albany Medical Center and University of Wisconsin-Madison.

Awards and Honors
Thirlby Award of the American Urological Association. Rated as one the country's Best Urologists by the Independent Consumer's Research Institute

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