Hi, so 36 hours ago, we realized my son (age 5, weight 43 lbs) had a fever of 102 (after playing fine all day) and had a swollen gum around one tooth. The fever is still off and on, but now both his top and bottom gums are completely swollen. He threw up once ~24 hours ago, but other than that does not complain of his stomach hurting. Any idea what this is or should I take him in to see the doctor or dentist, or both?