Thanks for all these additional details.
I am sorry to hear about your problem and I know how worrisome this situation can be for you but hopefully, we can resolve this.
Such symptoms can come due to increase swallowing of gas during drinking and increase the production of gas in the colon from undigested food.
You should avoid foods that are causing an increase in gas production, You should not eat/drink too fast, chew the food properly, increase water intake, avoid smoking, cut down fat intake, and increase your daily mobility.
You should avoid these foods-
beans, peas, lentils, cabbage, onions, broccoli, cauliflower, bananas, raisins, whole-wheat bread, salads, and carbonated drinks.
Avoid these items-
· Fruits like apples and pears
· Vegetables such as broccoli, Brussels sprouts, and onions
· Whole grains like bran
· Diary products, including milk, cheese, and ice cream.
You can try OTC simethicone to reduce such symptoms. This would be helpful.
Lifestyle habits such as meal timings, regular sleep timings, and most importantly regular bowel movements are also important. Some amount of physical activity is essential for the efficient functioning of your digestive system.
You can Try drinking about 30 minutes before a meal to help your stomach digest better. You should Eat and Drink Slowly.
Probiotics may also be useful in treating flatulence.
You should get engaged in aerobic exercise and stress-management techniques like deep breathing and yoga.
It is advised that you should eat six small meals a day rather than three large ones. Smaller meals are easier to digest and may produce less gas.
Take Syp. Pepto-Bismol 2tsf thrice a day after meals.
A healthy diet is very necessary to be free from such symptoms.
Please follow suggestions, as we discussed and you would get good results.
Hope I have been able to clarify the situation for you and helped in resolving your query.
Please let me know if you have any additional questions or if you want to discuss this further.
Thank you for the opportunity to help and I wish you all the best.