Absolutely. The second trimester tends to mark the end of morning sickness, and the beginning of a much bigger appetite. Your body is also taking cues from baby, who is growing fast — and growing hungrier! There are some basic guidelines to how much and how fast you should put on the pounds, but don't worry if the rate you gain at varies. Try to keep it in the four-pounds-a month-range, and you’ll be fine. That said, now that you're in the second trimester, it’s time to pay closer attention to what you eat (and what you should avoid).