Bag anyone?

I made it home from beautiful San Diego about 40 minutes late and then the only checked bag which arrived was my bag full of dirty laundry. All the essentials are stuck in Chicago. How do I know they are in Chicago? The guy from London, the guy from Miami and myself all flew through Chicago. Also...as we waited 20 minutes in the plane at the jet way in Chicago the pilot let us know we were waiting for bags to be loaded because of short ground staff. This was the first flying trip in which I have had to rebook a flight because of completing canceled flights and go to a different airline AND then they also lose my luggage. They say it will be delivered in the morning. Wish me luck...