Will I gain weight?

Anonymous
I usually eat <1200 calories a day.
But today, on new year's eve... I ate like 3000 calories!

Yup, I'm a bad girl.
What should I do in the following days? How much will I gain? Or how can I avoid gaining weight?
Please, help! :(
Updates
+1 y
I'm 16, 152cm and 52 kgs (114 pounds)
Will I gain weight?
7 Opinion