DS 2.5 has got primary herpetic gingivostomatitis - started with fever a week ago, then cold sores around the mouth and bleeding gums. His gums bleed if I even so much as touch them with the toothbrush and obviously he is in a lot of distress. Dentist is insisting we keep on gently brushing and she will review him in 2 weeks. Has anyone had experience of this and did you keep brushing through the sore/bleeding gum stage? How long did it last, did it go away on its own...?