I have been taking my prenatals (Rainbow Lite One a Day) for several months before getting pregnant....no problems. I have had diarrhea off and on through out most of this pregnancy. I know diarrhea is a fairly common early pregnancy symptom but I have noticed a pattern with my vitamin. The days I forget to take my vitamin I dont get diarrhea. Recently I have been taking them at night before bed and then have diarrhea the next day. For the past two days no diarrhea and I have not taken vitamin....hmmmm. Is anyone else dealing with this or has had this happen. I have a history of bowel issues which were all corrected with first pregnancy...thank goodness. I do know pregnancy can either make irritable bowels better or worse. If it is from vitamins, does anyone reccomend a vitamin that may not do this. My queasiness also seems to be better when I miss the vitamin.