Sounds like you have pica, get yourself to the midwife asap hun and for god sake dont go to the ELC and buy sand to eat, its dangerous for you and the baby x x x
I just looked on a medical website..
"There are only two signs of pica: cravings for non-food substances and eating non-food substances. "
So it doesnt really matter whether she has eaten the sand yet or not, the fact that she is craving it means she has it.
I dont know, I have never craved non-food substances in my pregnancy.