No baby☹️

So I’m convinced I must be infertile or something because I haven’t had a baby yet. It makes me sad like everyone around me has been getting pregnant and I’m so happy for them, but deep down I feel like sad cause I’m like I’m ready for my baby I can’t make smh. Any advice? I only think this because my recent ex and I been together almost a year then he leaves me and gets anothwr girl pregnant of them dating 3 months... how long did you all have to try before you had a baby? I’m 22 btw if that helps any.