Craving for raw rice is not necessarily an indication that you have low iron. It could be due to other factors as well. While taking iron is not harmful, it does have its own side effects. Also, not all anaemia is due to iron deficiency. Therefore, it is better to get tested, find out exact cause and treat the cause.
Next Steps
Get tested for anaemia, and psycho social conditions, and make a plan for holistic treatment including dietary changes