RI's suck!! if i were u i would go to the vet and get a culture done to make sure. if its taken care of soon it will be easier to get rid of than waiting and less of a risk to ur snake. if u do decide to wait (u shouldnt) once u see mucus in the mouth and go to the vet. bump up ur humidity and raise temps a few degrees. soaking helps break up the mucus so soak for about 30 minutes everyday in warm water.