You need to find out the name of the prosecutor who will be handling the case and try to see him/her in person before Wednesday if you can manage that or before your fiance's arraignment on Wednesday. You can do it after the arraignment, but to get rid of this case as soon as possible it's best to do this sooner rather than later. Then, you need to tell the prosecutor all that you have said above: that you were drunk and out of control, that if he put his hands on you it was only in self-defense, that you are not afraid of your fiance, that you need no protective order, that you were so drunk you don't even remember what you said to the police, but you do know that you were trying to attack your husband, that you don't want him prosecuted and would like the case dismissed.
This case does not belong to you any more. It's the prosecutor's and he can go forward whether you want to or not. But you are the chief witness against your fiance, so if this is what you're going to say on the stand, it's not very helpful to the state. Therefore, even if he wants to go forward, if you keep telling the prosecutor you don't want to have him prosecuted and this was your fault rather than his, eventually, something favorable to your fiance can be worked out.
As for your fiance, he needs a lawyer badly. A conviction for domestic violence
will lose him his gun
rights under Federal law and as a member of the military,that would have serious repercussions. If the prosecutor is not interested in assisting you, make sure your fiance's lawyer knows what actually happened and that it's your fault and that you're trying to drop the charges.