Soreness and tenderness is just part of having a cartliage piercing. They are among the few piercings that can get the most sore.
Try and avoid any injury as much as possible, dont talk on the phone, and dont sleep on that side. These things will just add on more tenderness.
Try not to clean it more than once a day. Overcleaning will prolong the healing process and add on to the irritation.
