It was raining and was going over a hill... as soon as I reached the apex, there was something square in the middle of the road that I had no choice but to run it over. I heard this awful scraping and think it was a big tree branch. All seemed fine with the car but when I pulled into the driveway, I heard a scraping noise on the tire. When I look under the car, it seems as if there is a plastic shield that was knocked out of place. Should I be worried?