For more information, see: https://www.cdc.gov/coronavirus/2019-nCoV/index.html
We do not currently know if pregnant women have a higher chance of getting sick from COVID-19 aside from the general public or if they are likely to have a more serious infection as a result of their pregnancy.
Pregnant women experience many changes in their bodies that may increase their risk of some infections, and many viruses in the same family as COVID-19 such as influenza are more severe for pregnant women. As such, it is always important for pregnant women to protect themselves from illness.
We do not know at this time what if any risk is posed to infants of women who have COVID-19 during their pregnancy. There have been a small number of reported problems with pregnancy or delivery (such as preterm birth) in babies born to mothers who tested positive for COVID-19 during their pregnancy, but it is not clear that these outcomes were related to the mother’s infection.
Source: https://www.cdc.gov/coronavirus/2019-ncov/prepare/pregnancy-breastfeeding.html#anchor_1584169262
Those at higher risk from getting very sick from COVID-19 include older adults and those who have serious underlying medical conditions such as heart disease, diabetes, asthma, and lung disease.