I never changed

Ok so this 'beautiful' baby was born on the 24th July 14 years ago and well every one thought she was perfect. They thought wrong.
As a young child I would sit through arguements every day in my high chair not understanding why people argued, my dad hit my brother this one time I only remeber my brother grabbing his bag and leaving my sister closely following him. I didn't see either of them for 7 years.
My dad never stayed around, he was either at the pub or with pearl his girlfriend. he had an affair on my mom. I've never forgiven him for that or kicking our family apart. My youngest sister had to look after me, she said it was no hassle but if your 12 and wanting to go out with your friends and you have to look after your little sister she can't have liked it. My mom worked Monday - Sunday and I barely ever saw her and my dad came home every night at around midnight completely pissed. My sister couldn't cope she was being bullied because she had been seen with me and I was a fat. So she started self harming...that was my fault...I caused my sister pain.
As i grew up my whole family started to hate me for how I was in my childhood.