I got pregnant at the age of 19 to a very abusive guy who was arrested twice before getting a restraining order. I spent all pregnancy alone and really depressed. I cried all day everyday, it began with my dad telling me I’m not allowed to keep the baby and he’s gonna take the abortion on his own back so I don’t carry the guilt?? I thought this was already really stupid I carried on with the pregnancy by choice but my mum was horrible throughout, calling me a slut, telling me life would be better if I died if I cried in front of her she would tell me oh do you miss sex you dirty bitch my sister would insist I open up to her and if I told her how I was feeling or what my mum has said to me she would twist my words and cause my mum to scream in my face about me being two faced etc. Fast forward to when my water broke and I had no pain relief, at own point she screamed “I will fucking lunch you in a second” when I started crying in pain. She then proceeded to tell everyone how much she had to go through because of me when I was giving birth when in reality she just sat next to me the whole time and did very little, the day before I gave birth we had a screaming match because she was inviting people to come watch me give birth without my permission and when I picked her up on it she said it’s not true which I knew she lied about because I saw the messages. I came back home and that’s pretty much when she just became my worst nightmare, she wouldn’t let me breastfeed my child and shouted “NO BOOBS!” Each time I tried to feed my baby, she would shout at me not to go near my ds and kept doing things her way for example trying to put baby rice in my newborns formula, I have birth during the heatwave but she insteded the baby needs to be wrapped up and have at least 3 layers or he will lose heat and therefore weight. My sister would also contribute to this and kept saying I’m not dressing my child up properly (all my baby clothes she ended up taking for her child) and basically it’s just been this since. She will attack me by either shouting at the top of her voice if I don’t do something she wants me to do or pull me by my hair threaten to punch me, if she leaves for a weekend she will come back and tell my dad “oh you’ve lost weight” when he clearly hasn’t and I do feed him well, she claims she loves him more than I do and just criticises everything I do, When I met someone I liked my dad strangled me when he found out despite me being 21 and old enough to make my own decisions. They claim I am ungrateful because they look after my baby when I go to work and give him a home but I’m moving next weekend and want to go as low contact as possible, am I being unreasonable to cut contact? And if not how should I do it without causing a shit storm?
AIBU?
Oh OP, your post made me cry! I have a dd who had a child with an abusive man, but she turned her life around and so will you.
Your family sound like classic narcissists, your sister is the golden child and you are the scapegoat, it's isn't your fault! You are not a whore or stupid and they are abusing you. As a pp said, domestic abuse is not just between romantic partners.
Please, please contact women's aid. I work in a DV charity and they will help with housing, benefits and the law. I also think you'd be a candidate for a refuge as you ( and your son) are in danger.
However, and this is very important, don't tell any of your family that you're trying to leave as they will try and stop you. Get a bag ready with important documents, birth certificates, passport, benefit letters, nappies and a change of clothes for you and ds. Hide the bag, and at the first sight of any abuse phone the police. Don't think you're wasting their time, that's what they're there for.
Good luck lovely, keep posting here if it helps. Please don't underestimate the seriousness of the situation. 
To comment on this thread you need to create a Mumsnet account.