(((hugs)))) Vanna's mom
Sorry you're having such a horrible time with you TL. I told my husband he needed to get done because I couldn't parent anymore children than the three we already had, if I wanted to parent gently, that is. He said "no way, no how." So it was either get my tubes done, risk another pregnancy, or hormonal BC. Even after reading all the risks associated with the procedure, he wouldn't budge. So far, I've been lucky; my cycles are heavier, but not longer or painful. But that may be yet to come, and I don't consider myself "off the hook". I *hated* to have to take the step of voluntarily ending my fertility.
To the OP, I think the failure rate is higher the younger it is done, same as a TL. The body tries to repair itself, and breaks down the scar tissue, allowing the sperm to get through, although this is probably a rare occurance. The method used would also play a factor.
*******Just so you know, you and your husband should read the pros and cons of the V, as there are men (albeit rarely) who suffer side effects when it comes to testicular pain, and erection function.
DUH!!! just realized your hubby already had it done........scratch the above advice.