<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I feel so tired all the time and Ive been bleeding from my rectum and in between my periods. I also feel dizzy sometimes and Ive been gaining weight. Do you know what might be causing this?  <response>: Based on your symptoms, it sounds like you may have iron deficiency anemia. Well need to run some tests to confirm, but lets start by increasing your iron-rich foods and possibly supplementing with iron to help improve your fatigue and address your bleeding. 