i took a fall down 5 steps this morning on my back all the way down. i hit the steps with the center of my back at the butt area. it is blue as expected but i am having trouble lifting my left leg to the height of a step. I am a heart patient and I am on Plavix. I have some pain in lower part of my back below waist line and my left leg hurts in groin area while trying to lift it. I am 64 years old and i have never broke a bone. What do you think I should do?