I left my partner a couple of months ago due to him being volatile and smashing up the house. after I left o received suicide threats from him along with some abusive texts. so I blocked him on Facebook and had to change my phone number. This was after attempts to sort differences and remain friends during which he continued to be foul.
Recently I received a threat through a different Facebook account from him and so involved the police.
They have advised that I take out an injunction against him so that of he continues I have some sort of protection.
I am heavily pregnant and he has caused trouble on and off my whole pregnancy and I'm getting very stressed and upset over it now. 
I have no idea at all about matters like this ! Do I just go to a solicitor and ask to take an injunction out? Will I have to attend court and what about costs? Obviously I don't want him anywhere me or my baby but I'm living on state maternity pay so do not have a lot of money.
Any advice will be greatly appreciated!