Condition on the outside of the Vagina

Hello

Right beside the vagina opening there is some kind of bump. I'm quite scared and not quite sure how i got it. Its a clear bump but seems to be getting bigger, right on the outside of the vagina. It almost looks as if it were a blister but i know thats impossible to get something like that in this area? It hurts also, if you could maybe help me to figure out what this is. If you could please message me as soon as possible that would be great !