Hi im not sure if im going to be much of a help but my grandpa was diagnosed with this last year so I did a little research online & it said something about going to the blood bank once a month and have blood taken as obviously your losing blood so your losing some iron as well. Did you know it also runs in families maybe its a good idea to get your family tested for it. I thought I might've had it but it turns out Im running quite low on iron. Your doctor should've told you a course of action anyway. I hope that helps a bit take care of yourself