sorry but NO ONE can get rid of one that fast, I have bad them two or three times a year for many years , if you have had them before you will know that the area where the sore will appear tingles mildly a day before appear, that is the time to use Zovirax (Aciclovir) it is the best treatment so far. It sounds as though you have a date, An honest but urgent piece of advice, please, no kissing of anyone ANY where until it has completely gone, I am totally serious, it is highly infectious. Pete D