What Could Puss Filled Bumps On Breast Indicate?

im 17 i have a bump under my right breast i noticed it a week ago it was movin around now its doesnt and has tan colored pus comin out there's no odor though it doesnt hurt. sometimes under my breast and by ribcage it has like a pulled muscle feel like every couple months. i also have little white bumps under my breasts.my mom had to have a cyst removed from her breast when she was younger