My hospital nutritionist advised avoiding heavy gas-producing foods like cabbage or rajma. If it gets very painful, just ask your doctor for a safe pregnancy antacid syrup.
Omg the pregnancy gas is another level! Honestly, walking like a penguin in the room after dinner was the only thing that helped me release the bloating.
Since you have to be careful with sugar, avoid those fizzy sodas or sweet drinks for gas. Drink lots of plain warm water and eat small, fiber-rich meals instead.
A light 10-15 minute walk after lunch and dinner helps digestion incredibly. You can also do simple stretches, but only if your gynac has allowed physical activity.