Did he leave you to go back to his wife? Did you think he was gonna leave his wife? Were you pussy poppin on your left shoulder (catching arthritis in the process) and now you’re left alone because he went back home?
The answer seems clear having a baby is not likely to save your struggling marriage and it may in fact make things a whole lot worse between you and your spouse. So if your marriage is troubled in any way, please seek the professional help that you need and get back on a firm footing before you decide to bring another little person into your marriage relationship.