Hello, your condition of eating sand, cement etc is called as Pica, and that of eating raw rice is
Amylophagia which is again a type of pica.
It usually occurs in association with
iron deficiency, so, I would advice you to get a complete blood count(CBC) done and then take iron tablets if
anemia is revelaed by CBC. Also, spinach, pistacio, jaggery are useful iron rich foods, which you can consume.
Another reason for your symptoms is behavioral problem, and this can be overcome with psychiatrist's help or indulging yourself in some other activity whenever you feel like eating those uneatable articles.
Raw rice can irritate your stomach leading to
diarrhoea, or it could be just some other food which has led to diarrhoea. Whichever the case, remember to keep yourself hydrated during diarrhoeal illness, and if
fever, abdominal cramps are associated, antibiotics are needed along.