Is a marriage considered invalid if it was conducted without the explicit knowledge and consent of the girl, with the presence of an unauthorized officiant, and without official documentation, and what is the status of the girl after five years have passed since this contract?

Your marriage contract is valid and not void. The contract is valid even if your father married you off without your permission, according to a group of scholars. So how much more so when you have given permission, agreed, and explicitly declared your consent? Your withdrawal of permission after the contract holds no weight. For a father to marry off his virgin daughter without her command is permissible, though it is preferable to seek her permission. Therefore, you are under the marital bond of your husband, and it is not permissible for you to marry anyone else unless you separate from him through divorce or annulment. If you dislike him and he does not divorce you, then you may seek khul' (divorce at the wife's instance, by returning the dowry).