Hi, I know how frustrating this can be, although luckily you do not have any stds. I am 25 years old and was assulted last year so I think mine is sexual infection related although no doc can find what the problem is besides high risk hpv -but no cure. It is possible you could have vulvodynia, one of my doctors thinks I have it too, I never had any symptoms down there like this before I was assulted and a lot of people who develop vulvodynia have history of sexual abuse as children or adults, I hope that’s not ur case but it’s not nice either way. If it starts to effect your quality of life see a gynaecologist or dermatologist, although they are not always helpful, it depends who you get. Hopefully a doctor could be more help, none of mine have been for me. Vagina issues suck.