If I am at a moms group where everyone is chatting and we are all getting to know each other, then I will say, I have 2 boys but I miscarried a child in between them. If I am just in line at the grocery store and the clerk asks if I have any kids I will say “Yes, 2 boys, their ages are 4 and 1″. So I guess it depends on the environment.
I am amazed at how many women have gone through this once you do start talking about it in social situations.
God bless you.