Suggest Remedy For Swelling In Knee And Pain On Foot After Falling Down

I fell down the stairs on Sunday afternoon and jarred my knee and ankle. I didn t think. too much of it at the time but it has now become incredibly painful. I have had no sleep, I have been taking ibuprofen and co codamol but it has had no affect. The ankle is a little swollen with a slight bruise but the knee is unbearable it is swollen with no bruising but clicks every time I move it, the sole of my foot keeps having shooting pains and pins and needles. What should I do? I have tried to elevate and ice and rest as normally advised but it is just getting worse.