Do I need to send my H1B Approval notice (i797A) and H4 Approval notice to USCIS for H4 EAD as an Additional documents?

I am seeing threads where people are mentioning about DHS website to check status.

Could you please tell me the website and guide me how to check status?

And H4 +H4 EAD is not approved yet. H1 was approved on 06/18.