If you put your name outside and inside it will eventually show up.
From
https://www.aa.com/i18n/travelInform...ps_baggage.jsp
- Your name and address must be on the outside of your baggage. Name tags are available at all airport baggage check-in locations.
- Put your name and address on the inside of your baggage too.
If you didn't, you can probably be able to buy your stuff back at places like
http://unclaimedbaggage.com/
Unfortunately human errors do happen, more frequently that one wishes. I got into the habit of giving a second set of eyes to the process and not leave the counter until all bags are tagged, the adhesive barcode properly applied, and are all gone down the conveyor.