What is a hysterosalpingogram used for?
An HSG is a special x-ray examination which looks at the inside of your uterus (womb) and fallopian tubes. It aims to show whether the inside of your uterus is normal and if your fallopian tubes are damaged, swollen or blocked.
A hysterosalpingogram may explain why you have not been able to get pregnant and it will help your doctor decide the most appropriate treatment for you.
The HSG should be carried out within the first 10 days of your menstrual cycle but after blood flow has stopped. This is usually between days seven and 10. This is to make sure that you are not pregnant and to avoid using x-rays, which emit radiation, during early pregnancy.