Pain around belly button can be due to various causes,however the most important of them being appendicitis
in its early stages or a umbilical hernia
. Other reasons can be underlying infection within the umbilicus
or the urinary tract infection
. You should consult firstly with your physician and avoid ignoring such pain specially around the belly button. Based on the clinical and diagnostic investigations, the appropriate diagnosis can be made. Hope this will help. Regards.