Pfizer and Moderna Trial Exclusion Criteria: Women who are pregnant or breastfeeding.

Canada.ca - Vaccination and pregnancy

Pregnant people are at increased risk for severe outcomes of COVID-19. Evidence shows that mRNA COVID-19 vaccines are safe for people who are pregnant or breastfeeding. The National Advisory Committee on Immunization recommends you get a complete series with an mRNA COVID-19 vaccine if you're pregnant or breastfeeding.

There's no evidence that any vaccines, including COVID-19 vaccines, cause fertility problems.