Stomach pain with burping and loose motions often points to gastritis or an acid flare, but pain that isn't easing despite Pantosec DSR, esomeprazole and Meftal Spas, and has now lasted over a day, needs an in-person look rather than more home medicine. A gallbladder or pancreas problem can present this way too, and these medicines won't touch that.
Next Steps
Please visit a general physician or gastroenterologist today for an examination, likely with blood tests and an abdominal ultrasound, since the pain isn't responding as expected.
Health Tips
Go to the emergency department now if she gets high fever, repeated vomiting, blood in vomit or stool, or can't keep fluids down.