Do background checks show job history?

Has anyone had a background check for a job? Because right now I am trying to get a job at a hospital and they asked for my ss# for a background check and I just wondered what information the included. Theres nothing criminal on it or anything like that,...

but I had a job last year at a Doctor's office and got fired, but I didn't think to put it on my resume because it was only a few months. Is there a way they can find out about that on a background check? If they do and ask why it's not on my resume what should I say. Please help me I'm freaking out and I want this job soo bad and my second interview is tomorow!

Look, don't worry! They won't know unless you tell them, just make sure you don't lie if they ask. The background check for an employer only looks for a record and your past, etc., it's nothing too personal or evasive, only the federal/cops/and computer hackers will know ALL your info, the employer won't know unless you bring it up. Have you had a job since then? If so, that will help you, use it as a sort of guard, or shield to stay away from being fired topic. If they find out, because it sounds like you're not a very good liar, be straight with them. Don't lie, but that doesn't mean you can't tell half truths!

By now you should be hired, did you get the job?