I'm graduating in April, this year. I signed a job offer with a large company, X, to start in May of this year. I was told that the background check would take place roughly one month from now–in March.
My most recent experience was a short-term contract position last Summer with small company Y (less than 10 people). I left the company very badly. My experience at Y was included on my resume when I applied to X. I believe that I will be badmouthed if X contacts Y during the background check.
Is it safe to assume that Y will be contacted to verify my employment? Is there anything that I can or should do?
Moreover, is it safe to assume that my offer will be retracted if badmouthed? I'm starting to look into other companies with a resume that doesn't include my most recent experience.
Here are some details regarding the nature of my departure. I realized that I would not be able to complete the project on time. I raised this concern multiple times, but nothing changed. I was very uncomfortable at work due to various factors in the office. I became extremely stressed and depressed to the point that I was sleeping 16 hours a day. I ghosted the company–I stopped showing up and didn't respond to emails or phone calls.