My partner is always lying about everything he has ruined my pregnancy by not being supportive emotionally, he has a 4 year old that we have got custody of recently and he is not nice at all to my daughter he has hit her, pushed her down the stairs and lied and when I needed him to come out of work because it wasn't something I could do by myself and he has been off with me since he wants to drink and isn't horrible until the comments and lack of care in the last month or so I don't know what to do, his mum ruined my 12 week scan by starting on me when I was the only sober adult in the room, then my partner apologised to her and lied to me about it, I heard it and was stood there I don't know what to do, his ex makes out that I hurt the kids by always trying to find marks on her son during contact and he has lied about my hurting him to my face and I've said no I haven't and don't lie about that as I could be in trouble and he squints at me and laughs when I tell him off, when I say to his dad are you not fed up of his behaviour he says well what difference would that make, I'm 17 weeks pregnant and it's all changed with him, what do I do