how to soothe pain in the ears?

My baby has a double ear infection. We were given amoxicilin and also anesthetic drops to soothe the pain but nothing seems to work for too long and the anesthetic drips seems to only work for an hour to two at the most. Any other suggestions?? And is it safe to use oil drops on the ear if there is also medication in it or no? Please keep in mind my baby is 13 months and is also in the teething process.