Grace, help, Just this afternoon, I noticed a small bump at the side of my lips, it is only 1, I can't tell if it has fluid or just a pimple or a white head, when I try to press it, it doesn't cause any pain. If this just arised today itself, if it's a blister, how many days will it stay right there just to know if it's herpes? how can I really Identify if it's a pimple or herpes?, it's only 1..