Can I develop skin ischemia or necrosis after a nasal abscess due to a pulled stitch six months ago?

I am going to get reconstructive surgery for saddle nose. I'm getting swelling, weird smells and discoloration outside of my nose. This is due to an awful mistake on my part. Should I inform my surgeon about the pulled stitch? I do not their for fear of my reconstructive surgery won't be covered if i do so. Thanks in advance