What Causes Belly Button Pain With Discharge?

hi, i am 25 yrs old male, i had pain just above my belly button for almost a week. when ever i eat or walked down the stairs or tried to sleep on my stomach.. i could feel the pain. just yesterday in the morning when i woke up with discarge (red/white colour) fluid. and the pain is gone now.. but would still like to know what it was and what caused it.. Pratick Patel