Good job for not allowing these people to get you down. Don't listen to a word they say because they are evil. They are even likely people posting from the program, maybe WWASPies.
If you believe you can make things work for yourself and your baby then by all means do your very best. This is YOUR baby, don't let anyone try to convince you to do anything you don't want to do. Just because you are 16 does not mean you cannot be a good mother. You can.
There are programs to help young mothers and their babies, take advantage of them. In our community they have "The Pregnancy Resource Center," a place pregnant moms can go get free ulta sounds, clothing for the baby, and so on. Have you checked around in your area for a support network? It's important.
Hopefully Mike will not be brainwashed while he's in SCL and hopefully he will be able to contact you when he gets out. Just do your best with what you have and things have a way of working out.
I agree with whoever said that you should try to talk to other adults in Mike's life - relatives, counselors, whoever will listen. Pass on information that we have shared here with them and see if they would be willing to help you. If you cannot get Mike out, at least he will have a support network when he gets out.
Good luck to you, to Mike, and to your little baby. Please come back and let us know how things are going once the baby is born.
And remember - don't listen to these assholes. Don't even bother to give them the pleasure of a response to their comments - except to say - it's none of your business! As Ginger said.