Funky breath 2 weeks after canine extraction

Hi all, my 5 year old Huskador had one her of canine teeth removed 2 weeks ago after she accidentally broke it. All has been fine until a few days ago her breath started smelling foul. Her sutures look okay but I have noticed weird white gunk which i’m not sure is from her food or if this is an infection. She has a routine check up next week, but should i move her appointment sooner? Could this be a serious issue? She has not been on any antibiotics post-op, only on painkillers