Mommy, I think this is something you really need to talk to your OB or doctor about, hindi ako comfortable mag-advise on iron and calcium timing, especially kung pregnant ka or breastfeeding. A few of us moms have learned the hard way na ang timing at amounts ng vitamins matter talaga, at bawat mama ay different depending sa health situation. Please set up a quick consultation kasi deserve mo ng personalized advice, the doctor can make sure everything you're taking is actually working for you at baby. Rooting for you!