Anyone in their early 20s feeling like everyone around you is having babies but you lol

I am only 21 years old and without exaggerating every girl except a few that I knew from highschool are having babies!! Some of them are on baby #2 and I just feel kinda defeated honestly. It makes me feel like when I decide to have kids they’ll have no one to grow up with cause all my friends are having babies and my family too. My sister is only 11 months older than me and is married with a baby and actively trying for another 😭😭😭 am I crazy for thinking 21 is super young for babies? Marriage? Or is it time I stop thinking I’m a child and grow up lol