For couples who are hoping to welcome a child into their family but run into fertility issues, in vitro fertilization can come as an important life line.
However, it's also not an easy one as the process of fertilizing an egg outside of the womb is long, uncertain, and expensive, but many couples have found that it was their only chance to have a biological child together.
But just like in natural pregnancies, you never truly know what's going to happen as an embryo develops. And as two California couples found out, that goes double when your pregnancy journey relies on the diligence of other people.