You have what looks like a little cut on your lip. I didn’t think much of it, assuming it was a cracked lip from the cold weather and from you breathing out of your mouth at night due to your stuffy nose. You’ve had this before. When your nanny arrived she told us that it’s a cold sore. I really hope it is not a cold sore. They are extremely contagious, so we’ll have to keep you away from other kids and activities where you could spread the germs (so no birthday party this weekend). And once you have the virus you’ll have it forever; you could experience outbreaks throughout your life. We’ll keep an eye on it over the next couple of days and call the doctor if it seems like it’s getting worse.