I feel a constant, nagging hunger (a craving for carbohydrates)

There are several possible reasons: Insufficient water intake, irregular meal times, or a lack of sleep.
For women, it could be related to the pre-menstrual period or other factors (please consult with the clinical team).

It is completely normal to feel hungry during the first day or two; this is a natural part of the process, and it will pass.

Women – during your monthly period, increase your intake of orange-colored foods such as sweet potato soup, pumpkin, carrots, and butternut squash.