Where is my stimulus check?

I filed through TT for both 2018 and 2019. Never owed, not a dependent, and I meet all the requirements for the full $1200 stimulus amount. Filed and had my return accepted April 1st. Got my refund in DD. However, I forgot a small W2 and immediately filled out and mailed in a 1040x form. When I use IRS's tool to see my status for stimulus payment it says "Payment Status Not Available". 

 

Anybody else in the same boat or have any ideas as to why I'm getting this message?