An iron saturation of 5.64% shows that you most likely have iron deficiency anemia. It would be good to consult a doctor and show him/her the full results of your full blood count (haemoglobin levels) and the full iron studies (including ferritin level).
Iron deficiency anemia could be caused by dietary iron deficiency. But more importantly, it could be due to blood loss which could be due to various reasons. In females, one common cause of iron deficiency anemia due to blood loss is menstrual blood loss. Another important source of blood loss is the gastrointestinal tract (eg stomach or large intestine).
I would suggest that you consult a doctor and he/she will be able to help you further.