At that point, I only knew that there were no trials done on pregnant women, but that I was eligible to receive it. Julie began by explaining the known risks of Covid-19 on pregnancy, citing blood clots and preterm birth as primary concerns. She explained that not including pregnant women in vaccine trials was routine, and not a new precaution nor exclusive to this vaccine. I quickly Googled "Covid vaccine pregnant women" to discover that, according to recent headlines, the WHO had just that day recommended against pregnant women being vaccinated. However due to insufficient data, WHO does not recommend the vaccination of pregnant women at this time.

Source: CNN February 18, 2021 12:22 UTC