It happens. And, of course, we all have to figure out what works for us individually.
What's worked best for me is giving up 'meals'. Instead, I eat a little bit of something here and there every 2 - 3 hours throughout the entire day. It keeps my metabolism and blood sugar steady, plus I don't get really hungry and make stupid food choices
Oh - be warned that most of us tend to become ravenous around TOM. It must be the hormone flux.