What would you do in my situation with my wife?

Ok so got married Feb. 6th and wife went off of her Paxil when we found out she got pregnant and had to switch to Zoloft on low dosages. Ever since she got off her Paxil she went crazy and the Zoloft helped but she was never the same not to mention the hormones. Well started talking divorce quickly after goign off Paxil and it was like kissing and sleeping in the same bed allthough she enjoyed it before became a chore so she stopped and eventually questioned if she loved me and eventually decided she doesn't love me. I just got her back onto Paxil a few days ago since baby is recently born and the adjustment has been ruff. She asked me today if I would sign the papers if she filed for divorce and I said no, then she got worried and I said I'm sure you can figure out a way to divorce me without my signiture. Then she asked me if I would fight for full custody of the baby and I said well I'd atleast fight for 50% and then she started getting upset and wondering if it'd be worth it to divorce. I love her and I told her I want both of us to have 100% custody and it's not fair because I never did anything to seperate me from her or the baby and if she divorces me I lose alot of custody anyways and that it does me no good to want a divorce and that I've done nothing to deserve this. She's allready lost full custody of her kids from a prior 14 year marriage and she used to wanna go back several times so she could atleast be with her kids and even when she used to say she loved me and treat me like it she missed her kids alot and she doesn't wanna loose her new kid now that she finally feels like a mother again. Obviously I won't live with someone for the rest of my life without them loving me or being able to be intimate but I don't have to to take the baby away from her and I know I'm miserable without my new son. I've been paying all the bills since March when she lost her nursing job. I am willing to do anything to keep this as a family and she know that I love her.