My 2019 tax return is still being processed. I filed and it was accepted on April 05, 2020 and I did not file for the 2018 tax. I haven't received my stimulus check yet. How can I get the stimulus check now?

As I described above, I filed the 2019 tax return and it was accepted. My issue is, I could not check my stimulus check status, it is saying "payment not available". I did not file for the 2018 tax. What can I do now to get the stimulus check?