Maybe date long enough to get married then have children? I have friends who have had children before a year and struggle because caring for a child changes relationships. Maybe you can focus on a wedding first? Make sure he is someone you can see yourself with for a long period of time.

Im 23 and I don't feel like my biological clock is ticking. Science says I have to be in my 30s before I may experience higher risks of various impairments in the children I give birth to.