Vaginal ulcers

Has anyone ever has ulcers on and in their vagina before? I have one on my left vaginal lip and it hurts really bad & my whole lip is swollen and red, there are also some right in my entrance and on the other lip too.. does anybody know things that could help? Vaseline? Or will it go away on its own? I don’t believe it’s herpes I haven’t been with anyone infected.