vomiting after prenatal vitamin

I have been taking the soft gel Alive Prenatal vitamins with DHA and for the most part I've had no symptoms all pregnancy. I take the vitamin at night (just like I did with my regular alive vitamin before pregnancy) and for the last 3 days I've thrown up right after taking it. I also never take my vitamins on an empty stomach... I don't see my doc until later this week. Anyone have any suggestions or have this issue?