Stimulus Check for people on State Disability

Hello, I did not file for 2018 and was not expecting to file for 2019 due to not working because of a work related injury. I was hurt at work and have been dealing with workers comp and state level disability, and was told that I did not need to file back in early 2019 because I had no income outside of the workers comp and state disability. I have since filed for SSI, but it is still pending review/approval. How can I make sure I can get the stimulus check? I am at a full on loss, I have been searching for information to make sure I do this right, but the IRS isn't taking calls right now.