After you file

Quick question for everyone- I checked the "someone can claim me" box on my 2018 return, but was not claimed. I submitted my 2019 taxes on Monday, April 13th prior to checks being mailed out and did not check this box. My 2019 return is still being processed, but according to everything I've read, I qualify for the stimulus check based on my 2019 information. Should I be receiving a check once my 2019 return processes, or would the IRS have gone based off of my 2018 return? Thanks in advance.