My left outer ankle

Hello! I  have a lot of pain by my left outter ankle, idk if this is an Achilles thing? Its definitely from increasing my mileage so much training for this marathon in April 

My plan says I’m supposed to run 14 miles today. But I don’t think that’s a good idea. I tried 2 different 4 miles runs this week to test how I feel, and now it hurts to walk. 

What should I do to recover and how long should I wait before running again?