After 12 years of caregiving, I am run down. I was anemic but pulled my hemoglobin up to 12 from 8.5. Dr. says my iron reserve is 6, up from 3 and should be double digits up to 250. I occasionally get leg cramps. Severe. Two nights ago they lasted two hours. I came close to passing out. Have an appt next week to see my dr. but I'm wondering if this might be due to iron deficiency.