Goingtobelonely,
I can only echo what the others are telling you. I hope my story can help you make your mind up.
A few years ago I was in your shoes. My then partner had always been very controlling and emotionally abusive, occasionally physically so, but it's when I got pregnant that the physcical abuse became almost a daily occurrence. I had a miserable pregnancy because of this, I left him several times but always came back. I have no family in this country and I never told any of my friends the extent of what was happening. I am not sure why.
Like you, I thought I loved him. Like you, I thought I couldn't live on my own, I couldn't bear the thought of being a single mother. When he was violent, he would say that I made him do it and I felt that it was all my fault, that if only I could be nicer and change, then things would get better.
So it went on. He broke some of my most precious possession, given to me by my mother who had died a few years previously. Once he hit me while I was breastfeeding during the night, because I pulled the duvet off him . Still, I stayed with him.
The last straw was when he hit me in front of our dd, who was 7 months old at the time. I changed the locks while he was at work. When he came home he tried to break the door down, luckily it was bolted. I had to call the police, it was so scary. At that time, incredibly, I still thought I loved him and didn't press charges.
I can't tell you how liberating it was, to be able to live normally, not to have to walk on eggshells all the time, not to worry about what mood he would be when he came home, not to worry that the next thing I said would offend him and start the violence again. Suddenly it was as if the scales fell off my eyes and I saw him for what he was, a brutal controlling monster with no respect or love for me.
Please leave this monster, listen to what everyone is telling you. Many of us on Mumsnet, sadly, have been through similar things, and all will tell you the same thing: it will not get better, it will only get worse, until he kills you. I don't know the statistics but many women die at the hands of their violent partners. Your child will be affected by the abuse, even if your partner is not abusive to them directly.
It is hard being a single parent, living on benefits, wiht little or no support. But it is infinitely better than living in fear.
Please leave while you can, before it is to late. If decide to leave (and I hope you do) please be very careful as when your abuser realise you are going to escape his control, he will step up his abuse.
Good luck.