tmi pictures. please help!

About a week ago I felt a lump on my boob. I thought nothing of it. Then my girlfriend pointed it out again. And so that day I took a look at it. And this is what it looks like. It hurts and it's hard all around it. My mom says it's an ingrown hair and not to worry but I am. But there a little ones forming and idk why. Sorry to be nude but I'm concerned and was wondering if anyone could share their thoughts with me before I consult a doctor.