Hi!
Sorry, just came across your post. HPV, also known as the wart virus, is VERY mysterious. The medical profession, quite honestly, doesn't know much about how it is spread or prevented (my GYN told me that with her own mouth). I have researched HPV because I was recently diagnosed with severe dysplasia. I had the LEEP surgery to remove the abnormal tissue and so far everything has been fine.
During my research, I found out that HPV can be spread by casual contact as well as sexually. I know you said that you are not sexually active, but are you a virgin? If you are not a virgin, then 9 times out of 10 you contracted it a while ago and it's just now showing up. It can lay dormant for years. HPV has over 80 strains of this virus and some lead to cervical cancer (not trying to scare you)
If you are a virgin, then I believe that you may have been a carrier of the virus and now it has shown up in your system or you may have gotten by casual contact. I read that this can happen. The CDC says that we must assume that EVERYONE has HPV and take the necessary precautions that we can like good personal hygiene and of course, protected sex, although it has been proven that condoms DO NOT protect against every strain of HPV. Now, that is scary!! But, it's all we have to go on right now.
Sorry you have this, but I understand. You will probably have to have more frequest pap smears to make sure that the dysplasia does not progress into precancerous stages or your GYN may recommend surgery or freezing. This is a VERY common problem for women so don't feel too bad about it. It is estimated that millions of women have HPV but just don't know it.
Hope this helps~