Hello, I don't know too much about cars and I would like to get everyone's opinion on something. The other day, I was waiting at a stop light when a car hit my rear bumper and shook the car a little. When I checked out the bumper, there wasn't a scratch or a dent but I'm worried about the "internal" components of my car being damaged because the car that hit me was a full-size sedan. Am I worrying about nothing or should I have my car checked out? Thank you for any information you can provide.