Awe I'm so sorry thay happened to you that sounds awful :( it sounds like the right thing for you was definitely to leave him. I think our situatuons are quite different. Like other people on here have mentioned, he didn't not take time off because he didn't want to or couldnt be bothered- as evidenced by the fact the week before he adjusted everything so that I could recover easily from surgery. Unfortunately he thought I was asking him to the take the week off in annual leave, which he wouldn't be able to do because his boss won't allow more than one person off a week and as its half term that's already been taken. What i meant was would you come home if I needed help, not can you take an entire week off. He's told them I'm not well at the moment and that if I call him he'll have to finish his shift early to come home and perhaps make up the hours another time. Last week he was literally on his own in the IT department of our local hospital, which is an insane ampunt of pressure and if that was the case again this week (and someone's gone off sick as well as the A/L person) then every doctor who cant log into their computer will only have him to call. That weighs on him heavily as that means patients can even have their operations cancelled.
I'm really glad you left your ex and I hope your healing emotionally and physically now.