I have been exercising for the last 3 weeks doing the treadmill and hot yoga. Last night after doing a 30 minute treadmill, my shin on the right leg began aching. It hurt all night and is worse today. It hurts mostly when I try to get up from a sitting position or sit down. It s located midway between my ankle and knee. What could this be?
Dear patient This can be stress fracture of your tibia or muscle pull. Since you are exercising for last 3 weeks it puts stress on your bone which is not accustomed to such extraordinary stress. This leads to minor fracture in code which is not usually seen on X-ray.  I would like to advise X-ray of involved tibia fibula anteroposterior and lateral views to look for fracture line. Avoid treadmill for one week to give rest to your tibia. Take milk every day with vitamin D supplements. If your pain is not relieved within a week MRI of involved leg is required. All the best.