A recent study by the University of Washington observed short-term reactions among pregnant and lactating individuals in the first wave of the COVID-19 vaccine rollout. They found that vaccines against SARS-CoV-2 are highly effective in preventing COVID-19 illness.
And research has found that COVID-19 infection is associated with adverse events in pregnancy and therefore recommends offering SARS-CoV-2 vaccines to pregnant and lactating individuals to combat adverse pregnancy outcomes.