15 pound binge weight gain won't go away

It was my boyfriends birthday.over ate cals by 1200 on both days. Carbs were around 400gs both days. Went from 129 to 145 in two days. I know it's mostly water but I feel and look awful. It won't go away. I've been eating low carb and drinkin tons of water and it won't go away. I've also done intense cardio today with lots of layers to sweat it out. I really don't know what else to do.

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