My hemoglobin has always been slightly low, under 12. Last physical exam, I was found to be deficient in iron and folic acid. Hemoglobin was 10.2. Colonoscopy ruled out colon cancer, which is first concern. A month after starting iron, it was Christmas and I was in much less pain even tho I was moving around! I truly believe it is the iron. Anemia can cause blood vessels to swell. I found sitting so painful, as I had a genital VM scheduled for embo. It stopped hurting! Now I read @ ferritin levels here. Please clue me in! I am 63.