I had joined gym in january this year and right after I started doing crossfit i used to have lower back pain. When I consulted with my trainer he said it's normal and after few stretching exercises it used to vanish for 3-4 days. But the pain became more severe around a week ago and it travelled to left leg. Now I am suffering from LEFT LEG PAIN AND LOWER BACK PAIN. Sometimes I feel sensations in my right leg too.