This is a great story, and definitely amazing to hear of someone having success after such a long time.
I hate to nitpick, but I just have to say it - just because tests come back normal does not mean that a couple is "healthy and fertile." In fact infertility is generally defined as being unsuccessful at getting pregnant after a year of TTC. While about 90% of the time, the cause of infertility can be identified, in about 10% of cases, there is no explanation for the infertility. It is an official diagnosis - Unexplained Infertility. Again, I am sorry to nitpick, but as someone with Unexplained Infertility, it can sometimes seem like our stuggles our minimized because people say "Oh - so nothing's wrong." when in fact, we just don't KNOW what is wrong.
Anyways, please don't take my commentary personally, just wanted to put it out there. Either way, it was a great story, and is encouraging to hear of other's success.