*TMI photos* does this look infected?

I had surgery last week in my underarm and pulled a stitch yesterday while at work. I have a doctors appointment tomorrow, but I'm worried that the incision looks weird. There's a bump where I pulled the stitch and it has what looks like a scab cuz it's dark green/black but it could also be fuzz from my shirt. It doesn't really hurt or anything. Excuse the hair, I haven't been allowed to shave yet.