baby fever

I'm 15 and have had baby fever for 2 years. I know I can't have a child right now and I'm not ttc. But it sucks whenever I see someone announce their pregnancy or announce their baby was born. I'm happy for them but it still sucks. I had a miscarriage my freshman year and it sucked. I didn't tell anyone. And whenever I get my period one day late I get excited and then heartbroken. How do I get over baby fever?