Almost a year TTC

Ok so long story short. I stopped my birth control march 2017. My husband and i have been TTC baby #2 since then. We conceived first baby no problem so it’s starting to depress me. I found out December 2017 that my sister is pregnant and it immediately broke my heart. I want it so badly and she only tried for 2 months. We did find out that my husband has a varicocele but he’s always had it even when conceiving first child. I dont understand why it’s taking so long. It’s crushing me. I have to hear about my sisters pregnancy on the daily and it’s so hard. I’m so happy for her but it’s so hard at the same time. I just don’t know how to handle it!