Stomach growling in the middle of the night!

This sounds like a silly question. Lately I've been waking up like 3am ish and my stomach is growling. And yet I have a healthy bredkest,lunch and dinner and a snack in the middle of the day. But is till don't understand why this keep happening? I know it's normal. I just got my period the other day and that can tend to make you crave for food at times. I know like I said before it's silly question but any ideas?
Stomach growling in the middle of the night!
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