Vitamins during pregnancy...
You should be on at least 1500mg of calcium citrate a day. Do not take it all at once, and at least 2 hours away from your centrum, or the iron in your multi will not absorb.
The B12 is important, keep that up :) I know this can all be intimidating.
Calcium Citrate should be at least 1500 mg per day taken in no more than 500 mg at a time (the body can only absorb 500 mg at a time.) Iron and Calcium cannot be taken together as Chelle pointed out. They require the same enzyme in the body to be absorbed and when calcium and iron are taken together (even in a multi-vitamin) they cancel each other out and is as if you hadn't taken any.
If you are just looking to stay with the pharmacy selection, I would recommeed switching one of your multi's to centrum silver. It has no iron and has selenium with the regular centrum does not. That way you can take some calcium at the same time without worrying about absorbtion.
Now I'm wondering about the way I take my vitamins.....I take a complete multi vitamin, 65mg Iron, 500mcg sublingual B-12, 400iu D3 and 600mg Calcium with 800iu Vitamin D added one time a day in the morning. I thought it was fine to take them at the same time, as my multi has all them already in it. Now I'm thinking I should take a prenatal at night with the calcium (instead of in the morning with the others). I should say that I'm over 7 years post-op RNY and haven't had my blood drawn in several years to check my levels. When I did have my blood drawn in the past, everything looked good and I was only taking a mutli and B-12. I'm thinking I need to contact my RNY doc and see if they will order blood work (hopefully they will, but it's been a long time since I seen them). Opionions please!!!
(im horrible at remembering them anyway.) something about these make me remember to take them...idk what.
I would talk to your personal nut. and see what your absorption is....thats what i did.