I do take a separate dha that is vegan friendly
I am taking "Kind Organics" they are vegan prenatals and give you all the necessary vitamin and minerals we need
I started taking nature made prenatal with dha. My ob said to keep taking it, it was just as good as what she would have given me. I think the gummies don't have iron, and if you are a veg you are probably already gonna be low on iron, so you should probably take a prenatal with iron if you can stomach it. Try taking them before bed to reduce any stomach issues if you are sensitive. The prenatals are important since they have vitamins and dosages specifically for pregnancy. And the dha / fish oil is important for brain development.
I like the one a day gummies for women but always check with your doctor b4 taking anything even a vitamin just to be safe and he/she might prescribe you one of you ask.