Maryland  |  Criminal Law

I live in Maryland and my question is regarding shoplifting. Earlier today I attempted to walk out of Target with a vacuum cleaner in my cart which I had not purchased, but as I was about to walk out of the store I was stopped and asked for a receipt. I handed the cart over to the Target employee and said, "nevermind" and left. This moment was a "wake-up call" to never try this again, but I am now worried about the possibility of further trouble because of this. I was not detained as I started to walk away after handing the cart over and they did not get any of my information, but I did make a purchase with my debit card upon entering the store about an hour earlier. If they somehow find that transaction, would they be able to find me using information from that transaction and file charges against me for the vacuum cleaner? The cost of the vacuum cleaner was $549 which I've just learned counts as a felony. I'm completely worried and do not know what to do at this point.