Every once in a while I get a small red bump on my vagina ( usually appears after shaving) when popped it bleeds and has clear fluid, sometimes puss but not usually. It’s only ever one, and once popped it goes away. This doesn’t happen too often. Just randomly after shaving. And it’s always in the same spot. I’ve never had a cluster of anything, doesn’t look like a blister. Is this just an ingrown hair the re occurs?