Well that sounds like ingrown hairs. No std.
That sounds like a pimple to me. Do you shave? Do you sweat a lot in that area? Have you had unprotected sex recently? Bumps could mean any number of things. It is too vague a symptom to tell you what it is. More information is needed to give you an educated guess. White bumps is not going to do it. Either way, it is not std related.