Taking vitamins with iron supplements is a good idea anyway. I hadn't realized that diet could be so poorly handle the job until Thursday night when I fainted at work quite a few times while having gastric attacks (diarrhea

).
My staff (since I was the Nursing Supervisor) called 911 and called the next shift supervisor to come in since I was going to the ER via ambulance. sighhhhhhhhh
Turns out I had critically low iron levels (anemia) of 7 when normal is between 50 and 101. My Red cell levels (Hemoglobin) were also very low at 8.2 (preferred ranges are around 12 or so). My blood pressures were around 63/30 (normal is about 120/70), so that indicated dehydration, so I got 2000 mls iv fluids.
The ER staff figured that I had an Intestinal virus, but because I had the low iron levels, etc, dehydration and my heart would slow down while going to the bathroom causing
syncope.
So, in retrospect, taking your vitamins is REALLY important. As WELL as eating right.
I am not sure how long it would take to 'build' yourself back up to give blood, but my personal opinion it would take more than a week.
I am back home now and feeling better but I now have to start taking vit b-12 injections and taking daily iron.

I've been feeling weak and poorly for a long time, but I thought it was exhaustion from work and kids.