Q for moms and people who know children

I have been depressed for As early as I can remember at age 4. I was recently told by mom that when I was 3 I would throw tantrums where I would bang my head things and punch my hands/feet on ground/walls/whatever. Basically self mutulation. She said it is normal for child tantrums but I'm not sure...I've had problems doing similar things in my adult life from severe depression/personality disorder. What do you think? Normal child behavior or can I track my irregular behavior back even further? Thanks in advance