anniebo28, not much help here, very difficult situation !
I have many issues with my first born's mother, she's a nightmare to be polite ! just remember a few things, keep calm (easier said than done I know)
do everything 1 step at a time the legal way, talk to CAB and solicitor (if possible) also try a website called FNF there's loads of legal help there
never give up, no matter how hard things can seem (and sometimes things get really messy / hard) never give up, just imagine if this baby is your off spring you have every right to be there for them