How Can severe Leg Pain Be Treated?

Hello and thank you for your assistance. I have leg pain to my upper thigh on the outside, roughly where my fingertips fall when I am standing up. When I place my left foot on the ground and tourqe or twist my leg, I feel a sharp sudden pain which feels like it is in the bone rather than muscular. Nothing has recently changed - when this problem occurred, it is during my usual style of walking. This type of pain never occurred until this week. This pain has happened 5-6 times over the past week. I am 57 years old and I do not have any medical conditions or prior trauma although I am overweight (166 pounds on 5 6 frame). I am healthy but I have a sedentary job. I participate in yoga twice a week and usually walk about 1 mile 3-4 times per week, depending on the weather. The pain is sometime mild but twice the pain was so strong I had to stop walking and try to grab onto something. I ran my symptoms through the Webmd symptom checker but I did not see any illnesses on the site which struck a cord. I am wondering if this is an issue I should address with my family physician in your opinion. Additionally, if you have any suggestions which would help me pinpoint a cause of this pain so I can complete further research, I would appreciate it. Thanks again.