Wanting a family of my own.

I've been with my SO for over 2 years and I can't stop wanting to have a family! I'm so jealous over seeing people post their baby bumps,talking about their family when I don't have a family of my own:( I'm still in school and my SO has another 2 years MAYBE in school and I know it wouldn't be the ideal situation but I can't stop thinking about it. It makes me depressed!