Watch what you eat . Hi I am much excited toknow if how are you doing right now after all these lifestyle you have applied in your eating habits? Did it go well? Please do let me know as I also have thw same problem. Let it stand for about 30 minutes. You could be having an episode of heartburn because tight clothing is binding your stomach. I started on zantac then that Baking powder remedy heartburn working now I take Lanzoprazole similar to Baking powder remedy heartburn . Drink juice made of papaya to reduce the effects of heartburn. Sometimes you may feel indigestion from chemotherapy and may require an anti-nausea medicine in addition to one of the above heartburn medications. Ginger efficacious to help calm the nerves that contribute to heartburn and absorbs acid in the stomach.