Weird Noises while driving

I just got my 04 Z and I didn't notice it when I got it but now I notice it it's loud I mean I can hear the exhaust while driving and I know that's normal but I can also hear noises like almost a clunking or swishing it kind of sounds like the gas is moving from the front of the car to the back and it sounds like suspension noises maybe I'm not sure.

it had 50,000 miles on it when I got it has 61,000 on it now and I'm just wondering what I should do.