Hi I Have This And This Pimple Between The Opening

hi I have this and this pimple between the opening of my anus and vagina it's quite big size of a great it's dark and its pinkish actually and it doesn't hurt until I touch it and it feels like there's something inside feels hard insideshould I be worried or should I should I see a doctor as quickly as possible could this be sexually transmitted or could just be im bacteria