Small white-ish bump on vulva

I have had this small bump on my vulva, sort of near where Bartholin's gland would be, for a while and have no clue what it is. It is not painful (unless I squeeze it or bother it) and feels firm--ie nothing to drain from it. I have been vaccinated for HPV, and recently had my annual gyn exam (I of course forgot to mention this...) and the provider did not say anything looked abnormal. Was neg for HIV, syph, gonorrhea, chlamydia as well. Anyone have any ideas?

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