Sorry but look at it from an outside perspective....
what if you had a daugher who came up to you and said, how many months would I be pregnant for if I were to have a kid?
What would you think? It's the same thing!
The Humane society rescued the pup, you adopted it. You would rescue it if they were going to have the pup PTS which they normally don't do with these pups they are placed very quickly.
However, a rough start to your begining on the board, I truly hope you have no plans to breed this pup.
Welcome