I m in my sixth month of pregnancy period. My doctor advised me to take ferium xt at night because of my low Hb (8.5) during my fifth month, but i do get chest pain like gas trouble whenever i take. i discussed this with my doctor she asked me to stop taking ferium xt for a week then now again she is asking me to take. Tonight i took i feel the same chest pain again. what should i do now? what may be the cause of my pain? i didnt take any gastric sort of food tonight.