Are you suppose to take two prenatal if you’re pregnant with twins?

We just got confirmation that we’re having twins, due to us going into the ER last night for terrible cramping and some light pink discharge. I forgot to ask the Dr if that means I’m suppose to take two prenatals per day? She said we’re measuring at 4-4 1/2 Weeks and my levels are still rising which is good. Just curious what other mommas have done. Thanks :) also prayers welcomed :)