Is it ok to take prenatal vitamin & iron every other day instead of daily?

i'm 13 weeks pregnant. 5 weeks ago, doc told me to take prenatal vitamin PNV-DHA. i had not started taking it yet when my blood test showed i had low Iron, so the nurse called and told me to have Iron supplement FEOSOL daily. she never told me what dosage of Iron to take. anyway i got 45mg tabs. i started taking them both daily but i noticed that its making me feel very weird all day whenever i take them both on the same day. so i started taking them on consecutive days. do you think its ok to do so? both of these leave a bad metallic taste in my mouth all day, especially when i take them on the same day. what should i do?