I'm having pain along the outside of my foot unless i wear a heeled shoe (5cm). what might this be and what can i do other than rice?

Foot pain : Your foot type, is it a “flat foot “ little arch? This could be from an unstable calcanus- cuboid joint. The diagnosis is made clinically. Cannot see on X-rays. One easy test which seems to hold true is to make a circular motion to both feet and in counter- clockwise and clockwise. Limited range of motion is noted on pathological foot. The high heels supinate the foot, stabilizing the joint.