Mild Panic due to Suspension Clunking

So, this only started today but, I was backing out of my boyfriend's apartment's parking lot, passed over a relatively small bump and heard a strange squeaking sound in the rear left of the car, like the suspension was protesting. Later in the day I went back to the apartment to pick up some things I forgot, passed over the same bump going forward and heard a loud clunk that went through the entire car and shook the steering slightly. The car still runs fine, steering is still completely responsive, I don't hear any clunking on any other bumps, even at speed. Visually I don't see any tires that are closer to the body in any way, or out of line. Only difference I can feel is that the car pulls slightly more to the right than normal. Can someone please explain to me if I should be seeing a mechanic about this?