Thanks for writing to health care magic.
It could be because of gastritis
. There could be various etiologies for the problem you are mentioning. After physical examination and confirming the diagnosis your doctor may prescribe antacids etc. Have your diet at regular time. Try not to skip your breakfast.
Continue to ask further queries as required.
Hope this helps.
Dr Y V Siva Sankara Murty
Associate Professor of Pediatric