I have a disability, I'm worried my boss is trying to fire me because of it. What are the signs and how should I proceed? I need this job to survive!

I have a disability and I'm worried that my boss is trying to fire me because of it. What are the signs that my boss is trying to fire me, and how should I proceed so I don't lose my job? <br>I need this job to survive!<br>It would really help if you gave resources on how to find a new job or laws protecting people with disabilities at work. I've been with this company for 8 months and I'm a temp worker.