I had a vasectomy 12 years ago which was successful. I was tested and had no sperm. I recently started a casual relationship and the girl (who is now pregnant after she came back from visiting her fiancé (didn’t know-Ouch!!)) believes I am the father. I went and got tested (twice) and both times came back negative for sperm. The confusion is that, based on the date of her last period and the date of conception, the child (in theory) should me mine as she left on vacation after the “peak” period of her cycle. For me, I can’t see how I can be the father but like I said, the math doesn’t add up. I should note that my ex-wife and I never had children after my operation but she, too, had her tubes tied due to mulitple mis-carriages (we didn’t want any accidents).
Is it possible for me to produce sperm once and then not again. Could this have been a freak accident (i.e. 1 in a 1,000,000 baby)? And do we need to wait until the baby is born to find out if I am the father (the girl is very stressed)?Dr. Edward Karpman
This is quite a predicament! The chances that you are able to get someone pregnant is extremely rare when you have been confirmed to be sterile on multiple occasions before and after this incident. A female’s ovulatory cycle does vary to some degree. It is more likely that the expected date of ovulation was miscalculated. A paternity test would definitely be recommended in this situation as I do not see how you could be the father of this child. Good Luck!
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