Babies after 35 too late?

Rose🥀

So the other night my dad made a comment, an innocent comment I should add. He said I need to have another baby or 2 before 35 because then it’s too late. He doesn’t know or anyone other then my husband that we’re trying. I’ll be 31 in February. Does any one know the truth to this ? I feel like I’m running out of time 😔