Hi, almost exactly two years ago I had an appendicitis and so had 3 small incisions on my abdominal area(one on my belly button, on slightly lower and to the left and one a bit more lower aligned with my belly button)... the 3 incisions were stiched for a couple of weeks,, recently however, the lowest incision feels a bit harder than the rest of my stomach area and hurts a little on pressing! On pressing harder some white substance comes out of it! What should I do?