Heavy or uncontrollable bleeding.


The Human Fertilisation and Embryology Act 1990.


Human Fertilisation and Embryology Authority. The HFEA is the UK's independent regulator overseeing safe and appropriate practice in fertility treatment and embryo research.

The HFEA licenses and monitors centres carrying out human embryo research and various fertility treatments including IVF and artificial insemination. It provides a range of detailed information for patients, professionals and Government.
Human Fertilisation and Embryology website

HFEA register

A confidential register of information about donors, patients and treatments provided by HFEA licensed treatment centres. It was set up in 1991 and it contains information concerning children conceived from licensed treatments from that date onwards.

Higher order pregnancies

A pregnancy with three or more fetuses. These pregnancies can arise from one, two or more fertilised eggs implanted in the uterus and developing into babies.


Persistently high arterial blood pressure. Hypertension may have no known cause or be associated with other primary diseases or conditions and is one of the most common risks of pregnancy.