Kick the carbs if you're eating them regularly, they hold massive amounts of water, they're usually processed which means added sodium, & cause inflammation & bloating (check nutritiondata.com for specific food inflammation factors). Eating mostly veg, protein, & meat for a few days (naturally diuretic and keep things moving down) and carb cycle back a few carbs on day 4 or 5, should keep the belly bloat down.
It's hard because I'm craving super carby calorific foods right now but bread, pasta, rice, noodles, carby soups, crackers, cereals make me feel lethargic and cause inflammation which is NOT good for pregnancies. I'm a high risk pregnancy and have been told to get off those foods and have anti-inflammatory foods like curries, salmon, leafy greens. I can only imagine what I'd feel like if I was eating pizza, pasta & high carb stuff right now. Pregnancy brings natural bloating without eating bloats carby foods!