New baby coming into the family

So yesterday, my brother and sister in law FaceTime me saying they are pregnant.👶🏻 Showing me the pregnant test and everything. I’m super excited for them, I’m happy for them, I’m over the moon that there is another baby coming into the family.🤗🙌🏼 After getting off the phone, I started crying my heart out.💔 I have been trying to get pregnant for over a year now, and nothing. I felt so heartbreaking because I’m trying so hard to have a baby and everyone around me is getting pregnant. I feel jealousy towards them, because they have something that I’ve been wanting the most😭😔 Is it okay to feel like this?