I do not have fertility issues, but I sympathize greatly with those who do. I can relate a little bit, as I feel I am just waiting for something to go wrong with the adoption. I still haven't bought the baby that was referred to me a thing, because I'm so superstitious. For a month after the referral, I was convinced the baby was terminally ill with some rare disease. I'm paranoid, I admit.
I'm not infertile, but I know the sadness of an extremely broken heart - that makes me different from the rest of the population but more like you all here, IMHO.
(I do not mean to assert that I know how it feels to be infertile, in any way - I just really empathize.)