I don't like looking bad especially when it's not true.

I want to break it off with my newly wed wife. I never really wanted to marry her in the beginning. We did it for her family and she told them I had converted just to satisfy their traditional desires. But I'm not a good husband. I used to love her but pregnancy turned her into everything I don't want to be with. In the time she's been pregnant I've seen like 4 different people. She doesn't know any of this. But she has said she doesn't really want to be a mom. Doesn't want to make any promises. Basically feel like she's going to have the kid and leave it with me. It was a bad idea I realize now to convince her not to get an abortion because she complained she felt the way she identified would not align well with being pregnant. And I'm not being abandoned like that or dumped. And I want to just kick her out but I don't want to look bad that I kicked my wife out who is pregnant in her third trimester. But I'm not going to stick around just for her to do that to me. I don't let people treat me like **** with warning. It's like dispose or be disposed of and I just don't really want to look that bad. But I don't really like the alternative. Which is my dilemma.