Post Gallbladder Removal: Feeling Sick and Leakage from Inside Belly Button?

I had my gallbladder removed 2.5 months ago. My top three incisions healed very nicely but the incision at my belly button took forever to heal because of infection. So, I was fine for a few weeks but then a few days ago inside my belly button ( not the incision) there was discharge that was yellow and bloody and smelled awful. There's also a hole inside my belly button. Any ideas what this could be?