Hi,
I have severe iron deficiency (due to a past gastric bypass) and have had to have iron transfusions before. I too like to eat ice although not even close to the volume that you eat. However, my hematologist told me that if that urge increases to go for bloodwork because it means that I am deficient again. Again, this is only me.
With the fear of the dr., I understand. My mom was that way too. I guess you have to decide what's worse, the knowing or the mystery. I've found that my mind and my imagination are usually worse than the reality.
Good luck-
jennikate