Rattling noise?

There is a slight and occasional rattling/clicking noise when driving. Usually when I accelerate or steer hard to the left, sometimes. It's a pretty obvious shaking noise on the driver's side, almost like it's right under the driver's seat or in that area like somethings loose or clicking against something. I can even feel it a bit. It's only heard inside the car, haven't heard it from the outside. Car runs great, doesn't affect performance.But there were some times that I've hit a bad pot hole or bottomed out. Is something just loose in the car? Something bad with the undercarriage or wheel bearing? Please answer. Thank you.