Single Mothers with Non Existent Fathers

I’m currently 30 weeks pregnant. The day I told the “father”, we wanted an abortion and said he didn’t want to be a dad. I obviously didn’t get one and havent talked to him since. For you mothers that have been in a situation like this, what will you or did you tell your daughter/son? When they ask you questions about their “fathers”? I think about this a lot and most of the time feel like a horrible mother about it. This is my 2nd child and my first child, her father is in her life. I just feel sad about it because when my daughter goes with her dad, won’t the other baby think “wheres my dad to get me?” 😭 idk y’all..