I have a m&m size hard bump near my hair line in my pubic region, under my skin that stands up about 1.5-2 mm. It has been there for weeks, has not grown or shrunk in size, It looks a little purple when I try to look at it, It does not hurt or anything. I thought it was an ingrown hair and tried to pop it, but nothing happened, it juat became tender and never went away.