I am not sure if they would be warts or not, you haven't had any kind of genital contact??
HPV (genital warts) can be passed through skin-to-skin contact. This is how I got HPV & genital warts.
You say you've had them for years now? Have they grown, changed shape or color? Every womans body is different and has different bumps and size to it.
I recently visited my gyno because I noticed some small white bumps that I thought were the beginning of warts and he told me that they looked totally normal and that he sees the same thing on women all the time, and that lots of women have different bumps to their vaginas which is totally normal!
If you are really worried about these bumps please tell your mother, a close relative, a close friend or their parent, or even a school counselor. You can always see a school nurse or go to Planned Parenthood which is totally confidential.
Please get some help and talk to someone, whatever is wrong can be taken care of, chances are it is nothing.