hi welcome to HCMForum. eating of abnormal foods, stomach pain, thinbuilt, suggestive of worms in the intestines. they eat the food you eat & make you anaemic and weak. when one is defecient of iron , proteins
, & vitamins
there will be an urge to eat unusual foods. I advise you to consult a doctor for deworming, and nutrition supplimentation. low weight maintance requires proteins& fats as well.
Besides i advise you some food recomendations, eat more of green leafy vegetables, cereals, sweet potato other tubers, fruits, juices,& high fat foods. dont worry you will be nice.