Baby #1,2, or 3??

Lani🌸

My husband and I are ttc our first child together. He has an 18 year old daughter (my beautiful step daughter) I have a 3 year old son (his silly step son) We both love each others children and treat them as our own. My question is should we call our hopefully future little one #1 since it'll be our first one together? #2 because it'll be the 2nd for each of us? Or #3 because it'll be the 3rd and final child to complete our beautiful family?

My beautiful family πŸ‘‡πŸ’œβ€πŸ’šπŸ’™πŸ’•πŸ’•