Are you sure it isn't a problem with the Bartholin gland?
I had that as a kid. When that cyst finally ruptured...phew! The only thing worse is having an abscess rupture!
It's near the vagina and it can become a cyst or an abscess.
When I first got my perianal abscess, I went to two diffrent doctors and they both told me it was a Bartholin abscess even though they both knew I had Crohn's.
When I finally saw a GI specialist, she told me it was a perianal abscess and directly caused by Crohn's disease, and definitely not a Bartholin.
So who knows??
If you're a woman, you should definitely consider that as a possibility!