Hi, I'm A 57 Yr Old Female In Good Shape

Hi, I'm a 57 yr old female in good shape and am on my treadmill 3-4 times a week, 20-45 mins. when I got up in the middle of the night and all day today I have had a pain in the right lower side of my back, where I can't even lift my leg to dress. It's like right under the back part of my hip