First appointment with a fertility clinic

Hello!! My husband and I are going for our first appointment with a fertility clinic this week after two years of unsuccessfully trying to concieve. We are in our late 20s and have never done any kind of fertility testing before. As far as I know, I am healthy with regular periods. Does anyone have any advice, words of wisdom, suggestions, or success stories to share to ease my nerves? I have no idea what this process will entail but I feel like I'm about to begin a whirlwind journey. Thanks!!! 👍🏻