I had acl reconstruction surgery on my left knee Oct 2014. I recently started experiencing pain in my left arch after running a mile. Help?

ACL recon. 22 year old lady s/p ACL reconstruction. What method did your surgeon use? Patellar tendon, Achilles allograft, hamstring? Rest, ice your foot until pain free then return to your running activity. Compress with an ACE and elevate if swollen. If any significant bruising or continued pain see MD. This is a sports injury probably not related to your ACL recon however you can discuss w/MD.
Support.... It sounds like it's time for the use of foot orthotics. If you have them already, they may need to be reconfigured. Consult with you surgeon to see if the reconstruction performed may have influenced your biomechanics.