Hi, i am 14 years old. About a year ago i found a very painful lump under my nipple. the pain got so bad i went to the ER. they told me it was just a milk dud or something like that so they sent me home with medication. The meds did not work it got infected and a lot bigger i had a rash at this point. so we went back to the ER a second time and they did the exactly same thing. I think it was 3 nights after the pain was so unbearable and it got bigger and more infected so my mom called my doctor and they scheduled a emergency surgery for the next morning to drain it. So just make sure you don’t let these things go without seeing a doctor.