Hello, I'd like to help you with your question.
It sounds like you have been through a lot. Whenever someone is abused, it can take a toll on their emotional well being. Surviving abuse is surviving a trauma. So you are going to have all the symptoms of someone who has been through trauma, such as anxiety.
The person you were with has taken over your life. You gave up your home, your pets and basically your life for this person who hurt you deeply. In a way, he has taken all the control from you and now you are trapped, at least in terms of your emotions. Experiencing anxiety would be a very normal response to what you have suffered and continue to suffer with.
You also describe that he has some kind of power over you. It sounds like you may have become co dependent with him. Your relationship has become unbalanced, with him in control and you doing what you can to keep him happy. It is very frequent in abusive relationships and can take a toll on the person being victimized.
You can learn more about co dependency and ways to address the abuse you have been through. Learning more will help you see the patterns of behavior that keep you trapped in the abusive relationship. Here are some resources to help you get started:http://mentalhealthamerica.net/go/codependencyhttp://www.webmd.com/sex-relationships/features/signs-of-a-codependent-relationship
Why Does He Do That?: Inside the Minds of Angry and Controlling Men by Lundy Bancroft
Also, it may help you to learn more about how to increase your self esteem so you feel you can counter the abuse and get yourself out of the situation with this man:
Self-Esteem: A Proven Program of Cognitive Techniques for Assessing, Improving, and Maintaining Your Self-Esteem by Matthew McKay and Patrick Fanning
Breaking the Chain of Low Self-Esteem by Marilyn J. Sorensen
And the most important step is to get support so you can gain strength enough to get out of the situation. Therapy is an excellent way to help you find out why you are in the relationship and how to get out. Ask your doctor for a referral or search on line at http://therapists.psychologytoday.com/rms/
I hope this has helped you,