Hello dr. My mother had ibd . Three months ago there was very critical condition . Then dr. Prescribed some injections which was taken after 1 month intervals . That problem is cured. But due to those injections hb was not getting . So dr. Prescribed to inject iron in body through glucose . Now after this there is some swalling at anus . And she is feeling difficulty or pain at that point while flashing. Is this due to iron? How many days taken to cure this problem?