Preterm labor
Bleeding in the first trimester
Chromosomal anomalies
Women also have a higher risk of developing certain complications during pregnancy, such as gestational diabetes, preeclampsia, premature detachment of the placenta (premature separation of the placenta and uterine wall) and placenta previa (when the placenta moves to the lower part of the uterus, covering the cervix partially or completely).
In the United States, flu season occurs in the fall and winter. While influenza viruses circulate year-round, most of the time flu activity peaks between December and February, but activity can last as late as May.
