I have got a cold sore, on my lip, just a small one. I've had them now and then over the years, mostly when I am run down - like now! I am wondering what is the danger, if any, to my 2month old son? I think I would have been the most contagious int he days before the cold sore showed up in which case he would already been infected.

Does anyone know anything about this and if I need to be worried??? Thanks