Hi welcome to the health care magic You can have acute gastritis or small ulcer like condition leading pain... USG done first for that and to true out any organic cause if present You can take rabeprazole for two week... Avoid excess spicy foods Avoid smoking and non veg fried foods Empirical rifaximine antibiotic can be given for bacterial overgrowth Cooked oatmeal help in soothing Drink hot water and fruits eaten more If no improvement noted than endoscopy investigation can be done for further work up Take care Consult physician for examination