They are babies for three Sims days.
There is a way to delete sims on the Sims 3, but i don't know how to do that. What I do know is that if you leave the baby till it becomes really lonely, and then eventually a social worker will take it away. Then you can never have the child back. :)
It is completely random.
Your sims baby will be ALLOWED to move out when it is a young adult, but can have their own home as a teen if an adult goes with them and the adult dies or is killed.
About three days.
6 months
A pregnancy takes about 9 months.
About 3days depending if u adopted it or wohooed it
I don't really know the answer to that. My Sims is a heart breaker and I wanted her to have lots of kids but it takes to long. I guess the answer has to be... That in Sims 3 you can't make your Sim have a baby faster. You can in Sims 2 though!
Not sure..Ask someone
9 months
human sims can't have a baby on the sims 2 pets for the PS2