or what?

It is not uncommon for anyone who carries the type 1 virus (who is almost EVERYONE, by the way) to get a cold sore when they are sick, stressed, or generally run down.

Yes if you are prone to them. Your bodies immune system is weakened when you are sick so the virus that lies dormant pops up when it gets the chance. They can also be brought on if you have had lack of sleep or stress.

Yes. If you have hsv 1 the virus that causes oral herpes it is likely for it to show its face when the ammune system is weakened by illness or when you are worn down.

yes you can, not everyone but most people do..its normal and nothing to worry about

If you already have the herpes virus (cold sore virus) in your body, then it is quite common to get an outbreak if you are sick with some other illness, because your immune system is weakened then and so the herpes virus is more likely to become active. If you do not have the herpes virus in your body, getting sick with some other illness will not bring on an attack of cold sores, though it might make you more susceptible to picking up the virus if you come in contact with it.