I often have had something similar in the past. For me, it is caused by a muscle imbalance or tightening of the shin. My calf is strong from the running and my shin is weak/tight. Try some light stretching of your shin. From a sitting position, I place my toes under the couch and gently lean back. For strengthening, I use a resistance band and a Velcro strap that hold the bands to my shoe laces, but lifting a light chair or ottoman works as well. Pretend you are doing a sit-up, placing your toes under the chair and slowly lift. I try to go through the full range of motion. I hope you are feeling better.