I've heard they can upset your stomach too but my aunt takes them for her skin and hair and has no problems. It may have been nerves or IBS. You have time before you "need" them for the baby so you can experiment. Maybe skip tonight and see if your'e better tomorrow if so try again w/ the prenatal if it happens again than it probably is the vitamins, if not it's coinicidence. Are there different brands? maybe if it is the pill it's just this "kind" or maybe your body willadjust. Or oculd it be your body adjusting to no more BC pill? Anyhow I think you'll be fien especially since it's been 2 hrs since you've gone again.
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