Headlines going viral on social media are claiming that COVID-19 vaccine has a negative effect on female reproductive health and fertility. According to Regulation 174 Information for UK healthcare professionals:

Animal studies do not indicate "direct or indirect harmful effects with respect to reproductive toxicity" and "direct or indirect harmful effects with respect to pregnancy, embryo/foetal development, parturition or post-natal development "

It has been claimed that COVID-19 vaccine contains proteins that are used to make placenta. Headlines have suggested that this could make the body attack the placenta. According to Covid: Claims vaccinations harm fertility unfounded "this is not true - the vaccine does contain a protein which slightly resembles one used in the development of the placenta but it's not similar enough to confuse the body."