Hi. Just on the inside of my labia, I have a kind of large bump that feels like a blister. Just one bump. looks like it might be filled with clear fuild. It does not hurts when I touch it or sqeeze it. I've been with same guy for a long time. He is not cheating either! But he did give me a cold sore on my lip last year ..... but the fact that It doesnt hurt at all, no pain - itching and it's only the one bump confuses me.