Who is supplying the information?
From a joint statement:
American College of Obstetricians and Gynecologists
American Society for Reproductive Medicine,
Society for Maternal-Fetal Medicine
“As experts in reproductive health, we continue to recommend that the vaccine be available to pregnant individuals. We also assure patients that there is no evidence that the vaccine can lead to loss of fertility. While fertility was not specifically studied in the clinical trials of the vaccine, no loss of fertility has been reported among trial participants or among the millions who have received the vaccines since their authorization, and no signs of infertility appeared in animal studies. Loss of fertility is scientifically unlikely.”