Hi,i have a small single pimple? (like) on my outer labia,pinhead size,firm to hard and painless,it has been there since last 3 years,but recently around 2 weeks back,it increased in size,very slightly,and it got filled up with pus and started hurting when i wash the region. i've applied mupirocin locally and it seems a little better. however i would like to know what it is. i'm 24years old,sexually active since 5years with a single partner. i do not have any lesions like that anywhere else in the region or elsewhere. i'm worried if its a hpv wart???