Adoption

Going on almost 3 years of ttc.. I've been researching and looking up adoption.. For some reason, I feel like if we get the bad news that we can't have children of our own, already knowing about adoption and what to expect with it might make it a little easier to take... It's not that I don't want to adopt or I would love them any less, it's just I'm already heart broken over this I just fear it would be even worse if we found out from a doctor we couldn't have children.. Well, anyway my question is... How do I tell people we decided to adopt? Nobody knows we have been trying besides our closest family members.. (his mother and sister)