How long do herpes blisters on the face take to develop? If I go get abreva will it start to go away?

Herpes. 90% of those who get infected with herpes do not have 'blisters' or other outbreak symptoms. The other 10% have a varied experience and not many get acute sores in the post infection phase. I know you are asking a million questions about this, but there is little to help you with this very difficult virus. Only time will tell if you got infected unless your blood tests show an old infection.