Low iron but not anemic

I'm certainly not an expert but my daughter going through similar ID without anemia but she's having a lot of problems. At lease you have a Hematologist who should be able to give you a good answer. I'd call the nurse and have them ask. I've scoured the internet looking for this same answer and I've found it to be anywhere from 2-12 weeks. 

Hi, your haemoglobin is on the low side normal range for woman is about 12 to 15, do you know your ferritin level ?, I think it should be between 15 to 150, ferritin is a measure of the iron store, you need to find out the store, you can actually have to much Iron it's bad for you, if the ferritin is low iron supplement will raise it, I raised mine from 39 to 138 in about 8 weeks, I was taking bisglycinate 20 mg iron capsules, 2 day, 1 morning 1 at night, I opened them up into about 100 mils water with vitamin C effervescent tablet in, vitamin C makes the iron absorb much better, find out your ferritin level.

I had this years ago. My ferritin was 3. I was on 3 tablets a day and it took me months to get back up. I wouldn't worry about over doing it with having a test in 5 weeks. After 3 months of being on 3 tablets a day I got up to 60. I got up 100 and then stayed on 1 tablet a day to keep it at this number. In the UK anything under 25 is low. I'm not on tablets now and I'm usually in the 70's.