Since Thursday i have noticed a little pain in my belly button. Friday night when i got out of the shower i went to dry my belly button, then came a sharp pain on my right side all the way down to my hip. I looked in my belly button & something was sticking out. I had my mother-n-law look at it, she pulled whatever it was out. Then all of a sudden pus started oozing out. I still have the pain, & can feel a knot near my belly button. What is going on??