Tpoaz, your reasons were very sound.
I am assuming that the pregnancy was unplanned.
That is...you didn't actively invite a pregnancy into your life. But for an accident there wouldn't have been an embryo at all. I feel for you now because your distress is almost tangible through the screen. But you look at 'what might have been' through rose tinted spectacles.
What might have been is that you became desperate, depressed and resentful of your children. Resent and regret a fourth. Stretched mental health and reduced capacity to look after any of your children properly.
Children deserve to be wanted, and supported.
You terminated a pregnancy. In my view, though I know this is not shared by many, you terminated a pregnancy before there was a baby.
You showed loyalty to your dearly loved children.
That is what parents do.
I am sorry things are so, so tough for you. Your H is behaving VERY badly. Be careful you don't divert your feelings and upset about him into your own distress and grief.
Your reasons were very sound.
It may be that had you had pre-counselling you would still have made the same decision (since it was a sound one) , but you would have had the re-assurance that you had allowed yourself to make the decision. Given yourself permission to make that decision. That's what may be missing.