“What vitamins can help you get pregnant?”

I am not aware of any that help. But since you're trying, make sure that you're taking folic acid (0.4mg/day); you can get it by itself, or in prenatal vitamins.

First, always consult your ob/GYN physician. Most recommend a pre-natal vitamin nothing more. This ensures when pregnancy occurs your baby has the proper nutrients to be healthy. Also helps protect mothers from nutrient deficiencies. I would not take any other herbal supplement or vitamin unless told specifically by your physician. An example is the common over-the-counter medication claritin and other similar anti-histamine allergy medicines thin the cervical mucus and makes pregnancy more difficult.