What you have is a condition called "Pica" , a disease where people crave
for dirt,sand,crumbled rocks etc. This is considered a psychiatric disorder
an obsessive compulsive
one. You do need to see a psychiatrist
. You may
also want to see an endoscopist, a digestive disease specialist that can
take a good look inside your stomach and see if you still have any rocks
that have not passed through and may have to be removed.
Please do this as soon as you can.
Wish you well.