Hi, I recently started running and training for Marathon. Its been a week. After a couple of runs, on one of the run, my inner ankle of right foot started hurting after 3-4km and the left foot got numb. The numbness went away after i stopped running, and the ankle has healed after 3 days of rest and applying cold pack. I am 32 years old and not very physically active. Also I noticed that my right foot (the one with ankle pain) hits the ground at an angle rather than straight. Please let me know, what the problem could be?