Am i just being stupid?

I know this is probably stupid and you will all be like what the fuck. But a girl in my year (year ten) just had a baby at fifteen and I'm really jealous. I'm jealous because I know I might not be able to have that moment and I don't get why I can't just be happy for her. I'm not trying for a baby. I can't I'm a lesbian and to be honest I don't think having a baby at this age is a good idea because your not always physically. Mentally and financially prepared. I'm just so jealous and hate myself for it. What's even wrong with me because I feel like such a bitch right now and it's making me depressed. I've even cried I'm that jealous and that's so fucking stupid. I didn't mean to rant just needed to get it out. I'm sorry.