Only in the group that experienced COVID-19 in the second trimester were maternal and fetal health problems noted, namely the development of GDM that did not require insulin therapy in 19.4% (p = 0.01) of cases (vs. 3.4% of GDM in the control group) and the development of CHD in newborns in 33.4% of cases (p = 0.02). Here, INS is linked to COVID-19.