Left Foot And Both Knees Swollen And Bruised After Falling. Need To Take X-ray?

I fell down a week ago, my left foot and both knees became very swollen, bruised. I did not x-ray my foot yet?! Could not step on it. All the toes, especially the big and secondary, and half of the foot were extremely swollen and painful, discolored. Now I can walk slowly putting my weight on the heel. Swelling is going down slowly, but I cannot bent the big tow yet. It s painful to touch. Pain has subsided, unless I touch. Should I still X-ray it? I thought the radiation may slow the healing process?! Thank you.