Hi and welcome.
This is common side effect of
chemotherapy and these measures may be helpful to cope with it:
Drink plenty of clear fluids (8-10 glasses per day). Examples: Gatorade®, broth, Jello®, water, etc.
Eat small amounts of soft bland low fiber foods frequently. Examples: banana, rice, noodles, white bread, skinned chicken, turkey or mild white fish.
Avoid foods such as:
Greasy, fatty, or fried foods.
Raw vegetables or fruits.
Strong spices.
Whole grains breads and cereals, nuts, and popcorn.
Gas forming foods & beverages (beans, cabbage, carbonated beverages).
Lactose-containing products, supplements, or alcohol.
Limit foods and beverages with caffeine and beverages extremely hot or
cold.
Wish you good health. Regards