Hi there.. I can understand your worry.. vaginal boils or pustules or lumps cause lot of panic.. no need get worried so much.. causes of it includes-1.Skene's duct cysts which occur on either side of the urethra (where you urinate).2.Bartholin cysts occur on either side of the lower part of the labia majora, the outside of the vagina. 3.Blocked hair follicles, or folliculitis is probably the most common "bump" seen in the genitalia. 4.Hidradenitis suppurativa is a condition causes painful clogged sweat glands. 5.Molluscum contagiosum,viral infection causes small, fleshy bumps on the vulva.6.genital herpes causes pustules around vulva. 7.genital warts caused by human papilloma virus.. depending on cause treatment differs.. to know exact cause, direct examination is needed.. please consult dermatologist for complete evaluation and further management..