I went in the shower this morning, and noticed a pimple/zit like spot on my outer vagina. The bottom of the spot is a purple colour, like that of a new bruise. It seeps a little pus when squeezed, but other than that nothing. Any idea? I'm a virgin, so I don't think it's and STI/STD.
I don't shave either, so I don't understand what has caused it.