Happening in my leg

On Tuesday, my legs had a trouble. I got into a 湘南新宿 line. Then I sat down seat with reading novels and soon I slept. After 30 minutes, train arrived 新宿 station. I woke up and stood up. But something is strange. While I walked, I noticed my left leg was strange. I could not straighten my left leg. Also, my left leg had painful. I walked with a limp. After attended class, I went to bonesetter’s office. In bonesetter’s office, I had massage in my left leg. Doctor said “The reason why your leg feel painful is the weather changed from hot to cold suddenly. Your left leg will be able to cure soon.” I felt relieved. On my way home from bonesetter’s office, I thought my left leg was like an old person and also I thought I had to exercise.