TTC #1-Prenatal vitamins

Hello, ladies! My name is Michelle and I am 26. I've been married for a little over 2 years, and my husband and I have been TTC #1 for about 3 months now. AF is due on the 1st, but I got a little anxious and took a test this morning. It was negative, but I'm praying that it's just too soon. I was thinking that if this ends up not being my month, I would start taking prenatal vitamins. My doctor had told me to take them a few months prior to getting off of the pill, but I didn't. I would greatly appreciate some recommendations on vitamins! Or any other advice you ladies can give me. I've always wanted children, and my biggest fear is that I won't be able to have them. I know we've only been at it for 3 months, but it's so hard waiting! Baby dust to us all!!