The feeling is guilt . You have spent years waiting on him hand and foot. You though you were doing the right thing. So now you feel guilty that you are not doing it any more .
Usually when you feel bad about not being a good enough wife, you try harder . You do something nice for him and hope he will notice and reward you with some attention .
Now you are NOT doing everything you used to . And you don't even WANT his attention .
you have begun to see things differently , to question the status quo. YOu are looking at things from the other side of the mirror and they don't look right any more .
In the past you believed everything your Dh told you . You thought your marriage was normal, perhaps even quite good . You thought the problem was YOU . Now you are not so sure
You tell random strangers on MN about what is happening and they say it's abuse .
You read websites that describe your DH so well, you are convinced the author has met him
You confide in a friend , they are appalled and ask when you are leaving.
You are questioning the whole basis of your life for the last , what, 25 years?
OF COURSE you feel mixed up, guilty, angry , scared , confident, anxious etc . It's normal . There's nothing wrong with you .
It's like the process of childbirth - it's the work you are doing to produce a new life. Only this time it's a new life for you . But it's very hard work .