My Left Ankle Gave Way As I Fell I Tried

My left ankle gave way as I fell I tried to save myself and my body weight transferred to my left it was on a slight slope.after going to my right I still couldn't stop myself going down I got myself up and was in pain I rested the rest of the day (as this happened early morning) I got up this morning went to work 9-3 at work sitting at desk it was uncomfortable sometimes I had to get up and walk around just to get moving it would take a couple of minutes.I drove home and tonight I noticed it had swollen and is sore the muscle from the knee to the groin I have it up on a pillow and have iced it its comfortable while I don't move I have been taking iburfuron and paracetamol.I can get about on it but it's painful.it's a struggle where it has swelled up
I am sure it's not broke but I am worried about it