I typed this all up and wasn't signed in so if it shows up twice I apologize. I am at 39 weeks right now ... and I had a NASTY case of morning sickness around 8 weeks in till somewhere in my 5th month. I even ended up in the ER with dehydration because I couldn't keep anything down. I took the vitamins for about a month and just couldn't keep them down anymore. While yes it is ideal to take them, the vitamin fairy isn't going to come and hit you on the head and say your a bad person for not taking them. I've not taken them since that first month my baby is healthy and I am huge right now. Worry more about keeping fluids down and eating baby needs the basics more than he or she needs the extras. Babies have been born since the beginning of time and they didn't have vitamins, choose healthier things for the moment, and once you start feeling better you can try other vitamins, my doctor suggested I tried Flintstones or just taking folic acid ... when I couldn't do either of those she just said start eating cereal with high amounts of folic acid in it. Some people can keep them down if they take them right before bed or do halves.