<s>[INST] My 21 month son s cheek/ jaw is swollen. It just swelled up. He is not in pain and will let us touch it. I believe he is teething because he has a runny nose and has a pacifier in his mouth at all times. (He does not use nor has he ever used a pacifier before). We are going to call his doctor and take him in tomorrow but what should be do in the mean time? [/INST] Thanks for your query, I have gone through your query. The swelling in the cheek and jaw can be because of the wisdom tooth infection(Peritonitis or periodontal abscess leading to cellulitis). Nothing to be panic, Consult an oral physician and get a radiograph done to rule the amount of space present for the tooth to erupt if space is there for the tooth to erupt then the gum covering over the wisdom tooth can be removed. If the space is not available then you have to get the wisdom tooth removed. Meanwhile you can take a course of antibiotics like amoxicillin and metronidazole (if you are not allergic). Do saline gargling. I hope my answer will help you, take care. </s>