Hey Tummy Probs,
I had Pica recently when I was severley anemic and it is starting to come back. The definition is craving something non-nutritive like chalk, soil, paint chips or ice. It usually signifies some kind of malnutrition, like iron deficiency. If the multivitamins don't work quick enough for you (I needed a lot more than just a multivitamin and it took several months) ask your doc for a better explanation and maybe a blood test to determine exactly what your body is missing. It may be absent from your diet or you may not absorb it properly.
Search for pica on the internet and you should find more.
Total abdominal hysterectomy at age 26 due to abnormal bleeding. Kept ovaries.