most adults will test + for hsv1 whether they can recall obvious cold sores or not. Your hsv1 is a low positive but since most adults do have hsv1, it's up to you if you feel that it's worthwhile repeating it at some point or not. http://www.ashastd.org/herpes/herpes_learn_oralherpes.cfm is a link for terrific reading on hsv1 orally for more info.
oral herpes would not cause symptoms for 3 months. odds are you have something else going on that a dermatologist can follow up on for you since it appears to be a continuing problem.