I'm taking prenatal vitamins as i'm ttc. they have 4, 000 iu vitamin a as beta-carotene. i eat lots leafy greens such as kale. is that dangerous?

Not at all : Taking 10, 000 iu of pre-formed vit a during pregnancy is hazardous; docs generally advise limiting a to 4-8000 iu to be safe, but your prenatal contains no vitamin a; beta carotene is not vit a but a precursor your body can convert to a as needed. Beta carotene is not hazardous. See http://www.Care2.Com/greenliving/is-vitamin-a-safe-for-pregnant-women.Html ; http://teratology.Org/pubs/vitamina.Htm.