I got a bump on the top of my lip area between the nose and mouth. It appeared on Wednesday, turning into a flesh coloured bump, I thought maybe it was a pimple but after a few days it turned into a red lump. It's been six days and the bump is annoying me, what should I do? It's not a cold sore or else it would turn into a blister. I tried putting ice on it to numb it, salt and toothpaste? And also using the zovirax cream as my mum says it is a cold sore.