Because COVID vaccines have not yet been well studied in pregnant or breast feeding women, the decision is a personal one. Below are some sources and information that may help you in your decision-making.
The American Society for Reproductive Medicine Task force states the following: Patients undergoing fertility treatment and pregnant patients should be encouraged to receive vaccination based on eligibility criteria. Since the vaccine is not a live virus, there is no reason to delay pregnancy attempts because of vaccination administration or to defer treatment until the second dose has been administered. Because COVID-19 mRNA vaccines are not composed of live virus, they are not thought to cause an increased risk of infertility, first or second trimester loss, stillbirth, or congenital anomalies.
The full statement can be found here: https://www.asrm.org/globalassets/asrm/asrm-content/news-and-publications/covid-19/covidtaskforceupdate11.pdf
The American College of Obstetrics and Gynecology states that COVID-19 vaccines should not be withheld from pregnant individuals who meet criteria for vaccination based on ACIP-recommended priority groups and that COVID-19 vaccines should be offered to lactating individuals similar to non-lactating individuals when they meet criteria for receipt of the vaccine based on prioritization groups outlined by the ACIP. Their full position statement can be found here: https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2020/12/vaccinating-pregnant-and-lactating-patients-against-covid-19
The Society for Maternal Fetal Medicine can be found here: https://s3.amazonaws.com/cdn.smfm.org/media/2591/SMFM_Vaccine_Statement_12-1-20_(final).pdf
The CDC recommendations can be found here: https://www.cdc.gov/coronavirus/2019ncov/vaccines/recommendations/pregnancy.html