Struggling with family expectations about having children

As-salamu alaykum, I’m a 21-year-old guy and my wife is 20. We’ve been married for a year and live with my parents. My mom is upset because I want to save money for a house before having kids. She says people keep asking if there’s any good news, and she feels embarrassed with nothing to share. She reminds me that Allah provides rizq no matter what, and that my dad is old and unwell. She asks if I’m not ashamed to only think about myself, and that I’m denying my dad the joy of seeing a grandchild. She keeps questioning why I don’t want kids right now. Honestly, I’m young and want to enjoy life a bit, and at least put down a deposit on a home first. What should I do? JazakAllah khair for any advice.