Please advice whether being very emotional is related to psychiatric behavior.

Hi doctor,

I am a female, 29 years old, Height 5'6", weight around 119 pounds. I am not undergoing any treatment but want to know that whether being very emotional is related to psychiatric behavior or is it hereditary in anyway as my mother was not a totally mad person but required to undergo some treatment for a related disorder. Sometimes, I see a positive side of things but at times I am unable to control my anger, especially, if the person close to me ignores or hurts me. I am a mother of a toddler 2.5 years old having had my share of ups and downs in life that might be normal to anyone's life I guess but since my father's demise when I was in college, I felt like I have lost big support system. I find it difficult to let go of the hurting's of past which lead to some doubt in my mind looking at my mother's history if I am fine.