It is common for children to experience increased saliva production during teething, and this is usually not cause for concern. However, if your child is urinating less than usual and has developed a fever, it is important to monitor their overall well-being closely. Make sure they are still drinking and eating, and changing their diapers regularly. If their symptoms worsen or if you have any other concerns, it may be a good idea to consult a healthcare professional for further advice.