A Chinese study comparing pregnancies resulting from fresh and frozen embryo transfers after IVF, has found that nausea and vomiting during pregnancy are more severe in women who had frozen embryo transfers.
The study asked 360 women who became pregnant following treatment at the Queen Mary Hospital in Hong Kong to complete surveys about nausea and vomiting they experienced during the first trimester of pregnancy.
The results were published in British Medical Journal: Pregnancy and Childbirth.