What happens next?

How to overcome extreme fatigue during menstruation
Eat small, frequent meals throughout the day.
When you eat small meals throughout the day, rather than three large meals each day, you should be able to maintain a high energy level. Going too long without eating can decrease your energy levels, making it important to eat small, healthy snacks between meals.
When you eat a large meal, your body puts more energy towards digesting the food, which in turn can make you tired. Eat more protein to boost your energy levels.