Yellow CRUSTY scab over my wound after “open” rhinoplasty - How worried should I be?

Due to travel reasons, I had to remove the stitches after my open rhinoplasty earlier than it should have been removed. The doctor said it would be okay but now (over a month after my rhinoplasty) I have yellow CRUSTY scab over the wound inside my nose everyday. I remove it with cotton bud/cotton pad but it keeps coming back. How worried should I be?