Broken volume down button?

My volume keeps going down by itself constantly. I can’t see the middle of my screen because it’s constantly showing me that the volume is off. I’m not sure if the button is the problem because when I press it I can hear a clicking sound, so it’s not stuck. If I swipe up on the screen and change the volume there it just goes back down again after one second. It’s also not working with headphones. Is there something I can do?