Hi! thanks for writing to HCM regarding your health concerns! Well, whenever someone approaches me with central abdominal pain especially mostly around the belly button area) for more than 7 days along with bad taste in mouth, I first like to know his/her age and sex and if any significant medical or surgical history! however, as per your description, it is possibly an infective / inflammatory condition like appendicitis, urinary tract infection, gut infection, intestinal gas formation or in worse case chronic pancreatitis. Therefore a physical examination and USG of the lower abdomen is necessary before any medication! Therefore don t worry but write to us with my queries or contact a local physician for detailed examination Hope you got your answer; please do not hesitate to write to us if still some confusion is there! all the best!