That happen to me before i thought that it was something worst than that and one time i squeezed the bump and it was like some kind of substance and a hair also i didn't kno wat i was tho thanks
You might have a case of mad razor burn if you shave there or you could have some ingrown hairs, those do hurt pretty bad. I know this sounds gross but trying squeezing one and if a hair or something that looks like that comes out, then you have ingrown hairs. Thats the only thing I can think of if you arent sexually active.