What is wrong with my ankle?

Hi there, i’m 24F and i noticed this swelling on the outside of my right ankle. I’m able to walk on it, but it does hurt a little bit, and it hurts to move my foot up or turn it inwards. For some additional context I am a server and I do have to be on my feet for multiple hours at a time. And I have sprained this foot before but that was about 2 years ago now, so not sure if that matters. I’m also not on any medication, vitamins, i don’t drink or smoke, etc. I’ll include photos of my right and my left foot for reference. Should i go get this checked out?