Hi,my Mother in law is haveing a continuous drop in her hemoglobin level. In-spite of having blood transfusion of about 8 units of blood,(she was having ASITROM for Seven months which generated the initial problem of blood clot and swelling  in the leg after which she stopped the medicine, however she still has the clots & swelling for past 1 and 1/2 months and here hemoglobin level continuous to drop(current hemoglobin level-7.6))
The blood which is getting clotted in your mothers leg might be the reason for the problem. Because as it get accumulated in leg it will be digested there and resulting iron may not be absorbed. So till you give blood to her, she will improve, after that he level Chat Doctor.  Thnx