Help with cold sores being contagious?

if i made out with a girl who gets cold sores every winter
and now it is the summer
is there a chance that i could get the infection now?

Yes, there is a chance you could get cold sores. You might have the virus in your body anyway, even if you did not make out with a girl who gets cold sores. The cold sore virus is very common.

Many of us already have the cold sore virus dormant in our bodies, and never have a flare up of cold sores. We contracted it as children, as it is a very common virus, and children pick it up easily as they often share food and drinks, and may be less concerned about hand washing and hygiene. Cold sores can be transmitted even when the person does not have a cold sore, though it is less likely to happen then.

There is no over-the-counter medication or home remedy that cures cold sores. Only time will take care of that. But there is a good prescription medication for cold sores. It will make them go away much faster, and as a result of taking this medication you will have far fewer outbreaks of cold sores.

The absolute best treatment for cold sores is a prescription medication in pill form called Valtrex. It was intended for genital herpes, but cold sores are caused by the same family of viruses, and Valtrex stops colds sores in their tracks. None of the other treatments come close to the effectiveness of Valtrex, not the ointment Zovirax, and certainly not Abreva or anything else. Ask your doctor about it to see if you would be a good candidate for this medication. My doctor prescribed it for me for cold sores about five years ago and after taking it only a couple of times I hardly ever get a cold sore any more, and before Valtrex I was having several attacks a year. On the rare occasions that I do get one now, it is gone almost immediately when I take the medication - in about a day. In the meantime, here are a couple of informative links.

http://www.webmd.com/skin-problems-and-t...
http://kidshealth.org/kid/ill_injure/ach...

Cold Sores are part of the Herpes family.
They have active periods and dormant periods.
They can reappear at any time, often triggered by stress.
And are usually viral, so very close contact is needed to get it.

You might have the virus, or may not. There is no way of telling if it is dormant.

So yeah, you might get it some time in the future.
Use Zovirax to clear it up.