Things that go bump in the night...on my car

Om.....I'm just wondering if somebody shot at my car 23 minutes ago on my way home....a bit shaken up. On the freeway, shortly before my exit, I was in the left lane, and another car was in the right lane. About a half mile before my exit. It was either slow down to 60 and ride this person's tail, or speed up to 70 and go in front of them. I did the latter. And I wasn't a jerk about it either. Turning right off the freeway onto 162...the person takes the right, too, and they're behind me. They don't act mad or aggressive. They're not tailing me. But then I hear a LOUD metallic sound like something hit my car on the right. Did my tire blow out? Did I get shot? The people behind me take a right (but they weren't screeching, nor did I notice someone leaning out a window. It didn't look like a gangster car, either. And this is Orting, not east Tacoma) into a subdivision and I keep going... wondering what the heck and will my tire go flat? I'm still shaky. I get home and look over my car. Tire seems fine. There is a mark on the right front side, above passenger door. Was that there before, or did a bullet leave a groove as it skimmed by? I didn't want to wake up Chris. I'm glad I'm ok, but frustrated by thinking the worst and knowing I may never know the truth.