Riboflavin (B) and pantothenic acid (B) have no known teratogenic effects

Integr Food Nutr Metab 5(6):14 Shaw KA, Williams S, Patrick ME, Valencia-Prado M, Durkin MS, Howerton EM, Ladd-Acosta Christine M., Pas Elise T., Bakian Amanda V., Bartholomew Paige, Nieves-Muoz Nancy, Sidwell Kate, Alford Amy, Bilder Deborah A., DiRienzo Monica, Fitzgerald Robert T., Furnier Sarah M., Hudson Allison E., Pokoski Olivia M., Shea Lindsay, Tinker Sarah C., Warren Zachary, Zahorodny Walter, Agosto-Rosa Hilcon, Anbar Joshua, Chavez Katheleen Y., Esler Amy, Forkner Allison, Grzybowski Andrea, Agib Azza Hagel, Hallas Libby, Lopez Maya, Magaa Sandy, Nguyen Ruby H.N., Parker Jaylaan, Pierce Karen, Protho Tyra, Torres Hilda, Vanegas Sandra B., Vehorn Alison, Zhang Minyu, Andrews Jennifer, Greer Felicia, Hall-Lande Jennifer, McArthur Dedria, Mitamura Madison, Montes Angel J., Pettygrove Sydney, Shenouda Josephine, Skowyra Carolyn, Washington Anita, Maenner MJ (2025) Prevalence and early identification of autism spectrum disorder among children aged 4 and 8 years - autism and developmental disabilities monitoring network, 16 sites, United States, 2022

The blockade of immune checkpoints in cancer immunotherapy
Of course, you can also consider using a non-hormonal option, like the copper IUD or condoms, if you dont want to worry about drug interactions (condoms are also the only method that protects against STIs)