I had an extensive GI bleed . Received 5 pints of blood in 10 day hospital stay. 49 year old female. Hemoglobin was 10 at last hospital ck. I break out with red bumps with blisters on my thighs, chest, back, buttocks , arms, neck , and face. The bumps are very itchy and filled with clear fluid. I get about 2 day reprieve and then they start again getting worse each time. No new meds.. could these be caused by iron deficiency?