Why Do My Shin Bones Hurt And Leave An Indentation When Pressed, Even Without Recent Exercise?

Hi, My shin bones hurt when I press on them. I thought it might be shin splints but I haven’t exercised or walked for 4 days. I pressed on one just now and it hurt when I pressed on the bone and it left an indentation along my shin bone after pressing. It’s been going on for about 4 days.