It's not your fault. It's the cops' job.

It's your husband's burden to defend himself, convince law enforcement that he is not guilty. You should relax, rest to recover from injury. Your husband should feel terrible for hurting you, he needs to beg for forgiveness. Your husband hurt you. You don't know what he was thinking. Acting protective may raise suspicion that you have been threatened by him to lie in order to save him. You can only speak for yourself, not on his behalf. It is a good thing to let common sense, law and order in your marriage. It might just make your husband more careful, not hurt you, just like a normal person. Again, you don't know what he was thinking. You should think whether you like to get hurt again accidentally.