I am 17 years old. I just noticed a pain in my right breast and I looked and found a cut (looks like my skin tore).

. Also have a bumb on top of that breast (always been there . On the nipple area) . 

Is this bad , do I need to talk to my mom and go to the doctor.  Or is it not life risking.?Also I do not have any children and I am not breastfeeding.