DV making me feel sad and alone

My ex was extremely emotionally abusive towards me and super controlling, I could never tell the obstetrician WHY I seemed so depressed, even though I've always wanted to be a mother.... so I eventually got the courage to move out, move back with my Mum and change doctors without telling him exactly which doctor I was with. I told them everything and have a lot of support... but I still feel really down. 
His ex prior to me saw him out with her sister looking very 'cosy' and messaged me on Facebook to tell me what was going on. I knew he'd been seeing her prior and had a feeling he was cheating. She showed me photos of her face completely battered and caved in and he'd done that to her IN FRONT of her 8 year child...
I'm so scared of him but can't get an AVO yet because he hasn't directly threatened me or physically abused me. I just want to orotect myself and my unborn child... he wants everything to do with this child and I'd never forgive myself if he hurt my baby whether it be emotionally or physically... I don't know what to do anymore and I'm feeling like shit. Sorry to dampen the mood on here but I just wanted to know I'm not alone and maybe someone can give me some kind words or some advice... 

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