So I'm at about 12 weeks, and at the 10th week, my morning sickness really kicked up a notch. It's been getting worse ever since, and for the past week, I haven't been able to keep down my prenatal vitamins. I'm really working hard to eat the right things...snacking often...high protein...etc.

Are prenatal vitamins all the same? Are some gentler on the stomach?

What can I do to make sure the baby is receiving adequate nutrition?