I haven’t read what everyone has said already, but this is what I think.
Usually the most important things in our lives are the most difficult to do. His job and career are probably VERY important to him, and then knowing that there is a baby on the way puts more pressure on him. If he is the sole earner, that is a responsibility he is aware of. And to top that, the worst one, his parents have certain (high) expectations from him and he doesn’t want to disappoint them. There is a lot of pressure on him.
TALK to him. Talk to him about what is really going on. Don’t do it to get him to start looking for jobs, do it to understand it and help him understand it. I don’t know how intuitive you and your husband are. Most people aren’t aware of how many other psychological factors push them to act in ways they would rather not. But talking is the only thing that can help one discover that, AND paying close attention to yourself and your feelings.
Carl Jung, one of the greatest psychologists, believed that marriage is a therapeutic relationship, if done right. If both the partners are willing to really listen to the other person and be honest with their opinions (as well as compassionate) and honestly share their own selves and experiences, you won’t need any therapists to deal with the minor life issues.