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Fallopian tube X-ray (HSG)
HSG · hysterosalpingography · fallopian tube test · tubal patency test
Contrast dye is passed through the cervix, and X-rays are taken. They show the shape of the uterus and whether the tubes are open.
For trouble getting pregnant, before infertility treatment, or after surgery on the tubes.
⏱ Duration: the procedure itself usually takes 15 to 30 minutes; results often right after the images
Be sure to tell your doctor
How to prepare
- Cycle day. Usually in the first half of the cycle: after your period ends and before ovulation, often day 6 to 12. Ask your doctor.
- Tests. Usually a vaginal swab for infections is needed, sometimes a blood test. The clinic will give you the list.
- Pregnancy. Pregnancy is ruled out before the procedure. Sometimes you are asked to take a test, or not to try to conceive in this cycle before the HSG.
- Pain relief. Ask your doctor if you can take a painkiller 30 to 60 minutes before.
What to bring
- Your referral
- Recent swab and test results
- A sanitary pad
- Someone with you, if you feel nervous
How it goes
- You lie on the table, as for a gynecological exam
- The doctor inserts a speculum and cleans the cervix
- A thin tube is placed in the cervix
- Contrast is slowly passed through it
- Several X-rays are taken
- The tube and speculum are removed
What you'll feel
- Cramps low in the belly, like period pain, while the contrast goes in
- The feelings usually pass in a few minutes or hours
Afterwards
- You may have spotting for a few days. Use a pad
- Usually no sex, swimming pools, or baths for 1 to 2 days. Ask your doctor
- Go over the results with your gynecologist or fertility doctor
Contact a doctor straight away if
- A fever over 38°C (100.4°F), severe pain low in the belly, or bad-smelling discharge: call your doctor
- Heavy bleeding or fainting: call emergency services
Common questions
Does it hurt a lot?
Usually it feels like period cramps. Tell the doctor if it hurts a lot. They can pause.
Can I get pregnant in the same cycle after an HSG?
Ask your doctor. Often trying is allowed in the same cycle, but clinics have different rules.