I feel guilty for literally doing nothing. Inaction is a bitch.
What do you regret not doing something about?
Because I promised to marry my girlfriend, and now she's pregnant, and she's going to have a baby, but I haven't gotten a job yet.
It's good that you feel guilty since it means you regret your actions and want to change. You need to start by forcing yourself to be more active in your important pursuits. You need to immediately start looking for a job so you can support your girlfriend and the baby that will soon be a part of your life.
But what if I don't get a job? I am afraid she will break up with me if I don't get one soon.
The job market is actually pretty available at this current time. You can get a job almost anywhere now.