I have no clue what's going on with my right foot and ankle. That is the foot I broke years ago and…

I have no clue what's going on with my right foot and ankle. That is the foot I broke years ago and have a pin in screw in it. Well today is hurts just as bad as when I broke it. It's is all swollen and super painfull. I can walk but it is very hard to do it because the pain is so bad. I took some tylonal and have it elevated so hoping it starts feeling better.