My dh had a vasectomy 12 months ago and was supposed to submit a semen sample 3 months after the operation, to make sure that no sperm were present. (Apparently it usually takes about 3 months to get rid of it completely after the operation). Anyway he finally gave them a sample two weeks ago, and we just received a letter back from the doctor saying "it is very unusual after 12 months, but there are still sperm present and it may not be wise to rely on this as a method of contraception". !!!! The doctor didn't go into any explanation, but said that we could give him a call to discuss the 'implications'. Has anyone heard of this happening before? We haven't been able to speak to the doctor as yet (we've left several messages) so we don't know if it will mean having another procedure done, or whether we'll just have to wait a few more months to see if there's any change. BTW, this doctor is a well-known urologist and does about 25 vasectomies a day, so it's not like he's dodgy or anything. Trust this to happen to us!!!