The COVID-19 vaccine has not yet been tested in pregnant women. Together, the vaccines were tested in over 50,000 people and there were no serious side effects. Although, they were not tested in pregnant women, some who received a vaccine in the clinical trials did get pregnant. There have been no reports of any problems with these pregnancies, and they are continuing to be monitored.
We do not have data on whether the vaccines work as well in pregnancy as it did in the study of non-pregnant individuals. Be aware that people getting the vaccine will probably have some side effects. Although there were no serious side effects reported, many people had some side effects within three days of getting a vaccine, including injection site reactions like sore arm, fatigue, headache, chills and fever.
The Centers for Disease Control and Prevention recommends using acetaminophen during pregnancy if you have a fever (temperature > 100.8). This medication is safe to use during pregnancy and does not affect how the vaccine works.