Gina,
Here's a good website to get some info from.
http://www.anemia.org/patients/infor...on-deficiency/
It seems to be the most common type of anemia. You do have to go for a colonoscopy to rule out ulcers, colon problems, etc. as a possible cause. I think you have a very good doctor to send you for that. Most likely it will come back negative, but a good doctor will send you for the test. There are also certain foods you can eat, take the supplement and you'll have to have your blood test for a while.
I'm sorry you don't feel well. I had anemia as a child because I wouldn't eat.
I don't think it lasted long.