Herpes outbreaks tend to occur with predictable symptoms, although some people may be contagious with the herpes virus but show no symptoms. Most people experience tingling or other sensations 1-3 days before a herpes blister outbreak, followed by the appearance of sores. Over the next several days, sores will swell and fill with fluid. They will burst and crust over, followed by a scabbing stage, before healing and disappearing. Do not try to pop or get rid of herpes blisters. This will not speed the healing process and may lead to a wound infection around the blisters or a prolonged outbreak.