I am going to ask one last question here tonight after posting in the religion section tonight?

I have cancer that is in my right ovary, and I am starting to feel very fatuged as my Iron levels are borderline low. I have had borderline levels for awhile now and felt ok have felt better though but it was bearable. Now what I want to know is my fatuge is increasing and if I excersie I have to stop casue I do not have any energy to keep going. sitting up is getting hard to do now. Noiw is this related to the cancer or borderline Iron stores? Like I said before I have had borderline Low Iron for awhile now and it is only latley I have been getting very very fatuged. Could this be the cancer or my borderline Iron levels? I am confused. I had another Iron blood test on tuesday as well as the CA 125 which the doctor ordered. so can anyone help me?.