...when you have a cold sore? I don't even think this is a cold sore, it looks/feels like a pimple on my lip. When i push down on it (or put pressure on it), it hurts. I've had several cold sores in the past and this does not look like one at all. It is not itchy and is not growing larger or swelling up, which is why I'm inclined to believe this is not a cold sore. Can anyone help a brother out? Worst case scenario: I have a small cold sore. Is it safe to finger a girl? Have sex? I'm sure it's 100% NOT safe to perform oral or kiss.