My son has been sick and passed it on to me. I have only been sick for about 3 day and each day has been pretty bad. I woke up this morning to nearly my whole mouth broken out in cold sores. I get one or two a few times a year. I have never gotten this many at once. Could it be that the cough/cough is just compromising my immune system so much that the cold sore virus has an easier time attacking.