Verified answer

If it is a lump that is behind/in your breast, get it checked out IMMEDIATELY. A lump in your breast is a sign of breast cancer.

However, how you are describing it just sounds like a mole or something. Perhaps an infected ingrown hair. Ask your mom maybe to help identify it. :)

I've had a lump removed from my breast the same as you described, i went to the doctor and they sent me for an ultrasound and had a test on it was not cancerous but got bigger felt like a marble and moved around and i wanted it removed. Have had no more trouble. Make an appointment with your doctor, better to get checked out. Michelle

If this bump appears on the skin of the breast then it can be anything from a clogged pore, to a bug bite, to a raised bump caused by friction from a bra. Nothing serious.

Tell your mom or a mature female you can trust and I would go have it checked out, It may be nothing at all but it is always best to have a doctors opinion.

See a doctor. It could be an ingrown hair, or it could be something more serious. Have it looked at! Good luck to you!