Ugh. 😢

I just need to vent. So, me and my husband have been TTC for two years. He has a son from a previous marriage, who is 5 and CONSTANTLY asks me to have a baby. I always tell him that I'll think about it and he just has to be patient. His mother has always just wanted one child, and has been married twice, and is currently going through her second a divorce. Well, we just found out her and her newest boyfriend are expecting. She isn't even divorced from her second husband yet. My stepson is now calling her new boyfriend his stepdad, and his daughter is now his "sister". It drives me absolutely insane. I was supposed to be the one who gave him siblings. I try so hard to be happy for him, getting to experience the family he keeps begging me for. But it is so hard, because I wanted to give him all of those things. I know its selfish for me to feel this way, and its something I just have to get over. But I mean, I have a right to feel sorry for myself here. Don't I?