HI, and welcome to this safe place. I would venture to say that everyone here has been where you are in some way and has felt what you describe as well. So you are in good company.
You will no doubt, hear this a lot, so I will start: are you in therapy? Is there some human (not in cyberspace) who you could confide in? Don't worry, everyone who has left this kind of relationship has these wounds..everyone. You are not so alone as you may think. And there is safety in numbers (like here!).
I am so sorry you are feeling bad right now. Go ahead and feel bad, if you try to skip this part, you might have to revisit it soon....so go ahead and cry on my "shoulder" if you need to. We can all take it here. REally.
A good counselor or therapist will be able to help you through this and get you moving toward healing your broken heart and mind.
These abusers can really mess with our minds, I know. But moving beyond it is possible, it really is. You have already made a step in the direction of healing. You left the relationship....you have announced out loud how bad this feels. Step one and two...possibly many more already. Good for you! Keep stepping, walking through it. We will help.
I wish I could take this pain from you, but it is ok that you have it, this is the stuff great love for ourselves comes from.....this kind of struggle ONE DAY, will be the making of you (although I understand your wanting to choke me right now for saying that!)
Go ahead and cry. Post here. People (although no one knows what we look like) are all pretty cool, and certainly all know your particular type of struggle.
Bless you. Sending you light......see it?