Thank you for your advice in advance.

My main advice is to not assume your skin bumps are warts; my suspicion is that they are something else. Warts rarely persist "a number of years" and there are plenty of other causes of skin bumps, some of which can appear quite similar to warts. You should see a physician, ideally a dermatologist.

However, if they are warts, probably they are common skin warts, not caused by the same types of human papillomavirus (HPV) that cause genital warts -- in which case your genital area probably is not susceptible. Finally, warts of any kind rarely are spread locally or to new body areas ("auto-inoculation" in medical terms). The immune system typically prevents new infection with the same HPV strain someone already has.

For those reasons, I think you have nothing to worry about in relation to your genital area being infected. 

I hope this information is helpful. Let me know if anything isn't clear.

HHH, MD