Personal Question..GIRLS ONLY?

I am leaking breast milk...sometimes i will just randomly see damps spots on my shirt where my breast are. My bra has alot of spots too...Is this normal? I am only 14 and I'm NOT pregnant. I just finished my period a day ago..this just started happening a couple days ago. Also, i've been on my period for 3 years. Can someone please explain this weird thing..also my mom said it might not be breastmilk..idkk .