yourmajesty, sorry it has been rough, and hope you are on the mend. it's hard to tell which problems were caused by Entocort (high blood sugar does sound suspicious for Entocort, but am not sure about
i noticed your reference to duodenal ulcers - just a heads up: the duodenum is where iron is absorbed. any problems or scarring in that area could cause difficulties in absorption, short term and/or long term.
often, before people develop full-blown anemia, they have been iron deficient for a very long time. low iron reserves would also make you very susceptible to infection, both bacterial and viral.