Hey,
I am sorry about what happened to you. I would definitely take some legal action, even without the wart (or whatever that may be), RAPE should not be taken lightly.
Warts can vary, small to large, rough or soft, tough i think they are usually more soft and fluffly. I would get a biopsy to find out for sure, or get at least 2 opinions before knowing.
The fact is not too many ppl have current information on HPV. Its not really an STD like gonorhea or syphillis, its a virus, kind of like a cold. It can be transmitted easily, even without sexual intercourse, skin to skin is enough of a median for it to be transmitted.
My doctor who is a Researcher/Urologist/Oncologist told me that 3rd graders have HPV in their dental cavity. So it is quite common. There are cases of virgins who have got it, and also married couples who were virgins before marriage. So sex is not the only way of transmission, although it is certainly 1 way.