My throat is sore, not unusual, but it's really sore and hurts all the way down, but only on the left side going toward the middle. Also, on the outside of my neck. There is a ridge of blisters/sores on the roof of my mouth. All came on within a few hrs. I had a fever blister last week and some canker sores. All went away. Could this be another virus from the first one? I haven't eaten anything unusual nor am I taking a different med.