I have a question regarding back pain, it has come on suddenly in the past week, I wouldn't be so concerned but when I go to get up I can barely walk as it is affecting my legs. I also can't lift the same as last week it is my lower lumbar and it is making my calves race and tighten up. I have 4 children and am active all day. I was able to pick my two youngest children up a week ago and now I can barely hold them.