How to get rid of an in- coming cluster Fever Blisters?

Ok, I'm so sorry if you didn't understand the question, but bless you for coming and reading this! Ok, so this morning, I felt like.. Kinda like a bulge feeling on the left hand side of my upper lip. Like, it felt fat.It was only like, a bump kind of, not my whole upper lip. So anyways, as the day progressed, I looked in the mirror, around 3 pm, and I saw like, 11 white dots in the bump. So like, a cluster of blisters on my lip. I have cheering on Monday, So I need to stop them from spreading before Competition. Back in April, I had a big break out of these, and I went to the doctor. Literally my whole lip, top and bottom, we're covered in blisters, and I couldn't even open my mouth. Its only.. like a cluster type thing. The doctor, last time prescribed me to this Zovirax, but I lost it. So I've been using, for the past few hours, one appliment of of Abreva, and like 2 or 3 appliments of Campho-Phenique. I'm scared cause I don't wanna wake up with busted lips! So please help! What will INSTANTLY dry them up? And I perfer something I'd MAYBE have at home? So I don't have to go out this late.. Thanks!