Binge eating before period… Is holding back the answer?

Whenever I start a diet, it is always right before my period

I'm falling apart.

I usually manage to control my eating and stick to my diet, but when my period approaches, I suddenly crave sweets and carbohydrates like crazy and end up binge eating...

I regret it immediately after eating, and seeing the weight gain completely shatters my mental state. I'm so confused about whether it's normal to eat a certain amount during this period, or if I should just hold back and endure it.

I feel like if I keep holding it in, I end up eating even worse once it finally explodes.

I'm on a diet; how do you manage your appetite before your period?