Obsessive-Compulsive disorder.
Also, stop looking online for HIV symptoms. It's a silly waste of time that can have no benefit, only can enhance your anxieties.
You asked about this same exposure back in November (two questions in two different threads). As we discussed then, your apparent OCD is the only health problem in evidence here.
"Did I expose my self to any risk?" Same answer as last time: no.
"Could the testing be wrong?" No.
"Is the cold sore a sign of HIV - unfortunately whilst looking for info on cold sore treatment I read on the NHS direct web site that it may be!" I'm sure a careful read of the NHS information would make it clear the information doesn't apply to you. Some people with advanced HIV/AIDS suffer from frequent or severe HSV infections, either oral or genital. But that is never the only symptom; such people are generally very sick from advanced AIDS. Of all people with oral cold sores, probably 1 in a million has HIV. Forget it.
"I am showing signs of OCD?" Yup.
Take care of that OCD. HHH, MD