How and when did you decide to have kids? (planned ones)

I have 2 step kids and in a nut shell, they made me have no desire to have any kids. But I turned 30 and my husband is absolutely wonderful. And the step kids are teenagers now, and…..... I’m kind of sort of thinking….. And I told my husband and he just told me “just say when”. Its still down the road, but I just wanted to ask how do you really know when you are ready when you think about it or plan it. No accidents… When you plan it.