Discharge apparently doesn't always mean an infection. I had some clear discharge with my surgical incision. I went to my doctor thinking it was an infection but he said that it's normal.
He told me to worry only if the discharge is a greenish color and has a foul odor. He said I should also worry if I see blood or blood in the discharge.
I'm relieved because I heard that if there is an infection, they have to cut open the incision again to clean the infection. I surely didn't want to go through that.