After I got out, eventually in our DV recovery group, we discussed -straw poll- around the room how long it had taken from the point of realisation that we were in a 'bad' relationship to actually being free of it.
On average 2 years.
It takes on average 2 years for an abuser to show themselves. if you know what to look for, the signs will be there much earlier than that. The unexpected reaction, the flying off the handle about something, destruction of property, sulking, silent treatment, all these kinds of things designed to punish you and train you into doing what you are being told to do by them. Triggers for augmentation of abuse are marriage, pregnancy, childbirth, job loss. Basically when you are placed in a situation of reliance/trust.
So then you have the relationship itself. however long that drags on, getting worse and worse and worse, NEVER better.
Then one day you realise that others don't live like that, and come to realise that all your feelings of sadness, fear and worry are being created BY this man deliberately to keep you under his spell/within his control.
That's when the exit starts. As I say, takes about 2 years on average to get the strength to do something about it, but I CAN PROMISE YOU THIS:
You will never, ever EVER regret leaving a relationship like this.
You will KICK yourself for not having done it sooner. You will feel like the biggest idiot on god's earth.
But you will be ALIVE, and your DC will have a CHANCE in life.
Whatever it takes, you can't go back now, you can only go forward. the ONLY option you have, be it now or later, is to leave him.
the ONLY option he has it to accept it and let you go. If he doesn't, then the police are there for that.
Mumset is a super place for supporting you through this