HYSTEROSALPINGOGRAM . .
This test is typically performed between cycle days 6 and 10—after menstruation has ended but prior to ovulation.
It is a diagnostic procedure used to assess whether the fallopian tubes are open (patent).
Fertilization usually occurs within the fallopian tubes, where the sperm and egg meet. If the tubes are blocked, the sperm and egg cannot meet, preventing fertilization and subsequent implantation in the uterus.
The Fertility Hive 