If and when you have children isn't anybody's business but your own and your partner's.
But people do so love to butt in.

The ink wasn't even dry on our marriage contract when my MIL started demanding grandchildren. Some of the nosier members of my congregation seem to have an "aephi alum baby watch" going. Even my parents have started in on me.
For crying out loud, I'm not an incubator! Next time someone asks me if I'm pregnant, I'm asking them for a coat hanger.