Is there a definitive way to verify if I'm eligible?

I filed 2021 tax via TT and my line 30 is blank when viewing my documents. I vaguely remember when the third stimulus was announced for $1400 but reading the income limit was $75k or something. I made $82k so figured I was ineligible. I did however, claim head of household as I've always have and I have 5 dependents (I'm a single father raising 5 kids). I was not aware there was a different limit for head of household versus individual filing. If I'm entitled to this rebate and if this field was supposed to be populated, why wasn't it automatically populated by TT? I checked my 2021 transcripts but don't know where to look to see where (if anywhere) it indicates I will be receiving.  When I log into my IRS account and view Economic Impact Payment Info, it says Economic Impact Payment 3: $8,400.00.  Not quite sure what this means and I ended up paying taxes for 2021. I have not received any letter from the IRS either via mail or e-delivery on the website. Is there a way to definitively verify if I will be receiving this credit? It would be a lifesaver for my family and I.