Legal Question in Family Law in Washington

Re: Together only one month!

I presume you mean as to the child. I assume the child is and will be living with the mother.

Your rights - none at all - you are not involved even after the marriage.

Your soon to be husband's rights - unless he established paternity and has a residential plan put into place not much at all. The State may establish paternity but they do not always put a residential plan into place. The residential plan establishes visitation. You need to see a local attorney as this situation will only get more complex the longer it is not dealt with. He may find he has the right to pay child support but not the right to see the child unless he takes a positive action to protect his right to help raise his child.