Baby fever

So I’m really just posting this because I need to get this vent session of my chest. So my sister in law just had her baby. My first niece. She is the most beautiful baby and I love her so much, but she is giving me the absolute worst case of baby fever. Me and her brother have been together 3 years longer then her and her husband. I can’t tell if I really want a baby or if I just want one because I feel like it’s my time and I’m never gonna get it.