Could you get the number of your local women’s aid and either phone or sometimes they have online chat. They will advise you what to do first.
Do not tell your oh.I tried this earlier in year but received begging, pleading, lovebombing which I wasn’t expecting. I’m still here now and things are even worse.
Get yourself a good solicitor but definitely contact wA they may be able to put you in touch with one
Take care and stay safe 💕