No, the child has to be born first.
Custody of children cannot be passed around like custody of purses or shoes. This arrangement will have to go through the courts.
Yes,
Nothing
No. Adoption papers cannot be sign until there is a child and legally they do not exist until after birth. Promising something before birth will have no legal stand. A mother will have the option to change her mind when she sees her child. That is only fair.
Even married the mother can choose the last name of the child. Ex-girlfriend means nothing in a legal sense, she can choose what last name to give her child.
No. The obligation of child support does not arise or become enforceable until a child is born.
I'd advise you to go to a family law attorney in your state and discuss the situation, rather than attempt to handle it yourself. Let your lawyer handle all communications with the father of your child and his spouse.
No
Legally, since the woman is the one to carry the child and give birth, it is her decision and only hers whether or not to have the child. The courts have supported this many times. Morally, however, it should be a decision made by both parents. The position of the mother should not have precedence over that of the father.
Titania refuses to give up the child to Oberon because she has grown fond of the child and doesn't want to part with it. Additionally, Titania believes that the child's mother was a loyal follower of hers who passed away, and she wants to honor her memory by caring for the child.
If you are HIV positive during your pregnancy your medical professionals will be aware of this as it is one of the things checked during routine blood checks of a pregnant woman. Medical development in the area of HIV is extremely good and precautions will be taken during pregnancy and childbirth to minimize the chances of HIV being passed onto a newborn by their mother.