Kaillie Humphries is the most decorated woman in bobsleigh history, winning three Olympic gold medals – for two different countries in two different events – as well as five world titles. She is used to success. So, she was unprepared “for things not working perfectly” when trying to start a family.

When Humphries and her husband, fellow bobsleigher Travis Armbruster, struggled to conceive naturally, they sought medical advice and discovered that she had stage four endometriosis, a condition in which tissue similar to the uterus lining grows elsewhere, such as the kidneys and ovaries. It can cause severe pain and infertility.

The Telegraph London