Is it possible I missed customs? My flight was from my home country to MIA, then to JG in Ohio. As it stands, upon landing in MIA, I passed through immigration, and then baggage claim just fine. However the person at baggage said I had to go to Concorse (Concord?) D. I proceeded through the exit for baggage through a ton of hallways out to the area where all the ticket counters were, then swung around the checked back my baggage for the next flight, and picked up my baggage in Ohio and left.
When I came back home I did pass through customs, but it was well, the only thing there. I am panicking now. I want to travel again, as my only friends are in the US. Nevertheless, this was honestly a mistake, as my first time trying to fly. Am I going to be blacklisted from the US, charged, etc.? What'll happen now? I don't recall passing through any green/red areas well.