Cartilage extrusion infection? (Photo)

In my case, I had ear cartilage implanted in my tip six months ago. And this morning, I noticed some kind of pus. I am not sure. When I cleaned it, it looked like a cartilage extrusion, and in the afternoon, it turned into a bump. Does it look like my body is taking back the cartilage? Or an infection. In the meantime, my doctor told me to apply an antibiotic ointment. Is there something I should consider doing? I did it overseas so it’s impossible to my doctor to examine it personally.