Welcome at HCM.
It looks from your details that you are having pain at belly button with cramp like pain at abdomen & throwing.You may be having gastroenteritis
or inflection of intestine.Most common cause of infection is virus .
Most cases of gastroenteritis resolves by itself in 3-5 days.You should do following to have relief-
-Take light diet only at first liquid & then with improvement of condition you may have semisolid diet.
-Take good amount of liquids.This is to prevent dehydration
-Take an antispasmodic medicine like drotoverin on prescription from your doctor.Advil
is not an antispasmodic ,so this will not relive cramps.
-If there is blood in stool
then please consult to your doctor immediately.
Hope this all will help you.
With best wishes.