I was pregnant four times, and I recently gave birth to my 5th baby boy. In this post, you’ll read about my first trimester must haves. Every pregnancy/labor is different. What helped with one pregnancy might not have worked for another. Overall I hope these ideas help you to survive your first trimester. #1 on my first trimester must haves is a good prenatal vitamin with iron. I loved taking garden of life organic prenatal vitamins with my last pregnancy.