Nausea and vomiting are very common in pregnant women, but only a few get a serious condition called hyperemesis gravidarum (HG), which means they vomit a lot before the 22nd week.
HG can lead to dangerous health problems, including a serious issue called pulmonary embolism (PE), which blocks blood flow in the lungs.
The case describes a 26-year-old pregnant woman who had HG and developed PE but recovered well after hospital treatment, which included medicine and support for her breathing.