When you’re trying to conceive and it’s taking longer than expected, it’s natural to start asking questions — why isn’t it happening yet? One common reason relates to the Fallopian tubes, which play a vital role in connecting the ovaries and the uterus. That’s where a simple test called HyCoSy can help provide answers.
What Exactly Is HyCoSy?
HyCoSy, short for hystero-salpingo contrast sonography, is a specialised ultrasound scan that helps doctors check if the Fallopian tubes are open or blocked. During the scan, a gentle contrast fluid is introduced into the uterus while the ultrasound captures real-time images of how it moves through the tubes.
If the fluid flows freely, it indicates that the tubes are open — a positive sign for fertility. If it doesn’t, that may suggest a blockage, which can affect the ability for an egg and sperm to meet.
Why Tubal Health Matters for Fertility
About one in three cases of infertility are linked to blocked or damaged Fallopian tubes. These blockages can result from factors like past pelvic infections, endometriosis, an ectopic pregnancy, or previous surgery.
When the tubes are blocked, fertilisation simply can’t occur — even if everything else in the reproductive system is working well. That’s why assessing tubal health is such a valuable part of a fertility check-up.
When Is the Right Time to Have a HyCoSy?
Timing is important. HyCoSy is best performed in the first half of your menstrual cycle — typically between day 5 and day 10 — before ovulation occurs. It’s also important that you aren’t pregnant during the test, which is why a simple urine pregnancy check is done beforehand.
What to Expect During the Scan
HyCoSy is performed by an experienced ultrasound specialist and is done entirely under ultrasound guidance — no surgery or X-rays required. You’ll be asked to change into a gown and lie comfortably on the procedure bed. A fine catheter is gently inserted into the uterus, and the contrast fluid is introduced while the ultrasound tracks its movement through the tubes.
The whole process usually takes around half an hour. Most women describe it as mildly uncomfortable, similar to period cramps, and many take a mild pain reliever beforehand to help.
Safety and Recovery
HyCoSy is considered a low risk procedure. Occasionally, women might feel light-headed after the test, but this usually passes quickly with a short rest. Infection is rare, but it’s important to let your care team know if you have a current pelvic or urinary infection so they can plan accordingly.
What Happens Next?
One of the benefits of HyCoSy is that you’ll receive your results straight away. Our specialist team will explain what they’ve seen and forward a detailed report to your referring doctor. This helps your doctor understand whether your tubes are open and guides any next steps in your fertility care plan.
A Helpful Step Toward Understanding Fertility
While fertility investigations can sometimes feel overwhelming, HyCoSy is a gentle and informative test that provides valuable insight into your reproductive health. It helps remove uncertainty and allows you and your doctor to make more informed decisions about your fertility journey — whether that means reassurance or exploring treatment options.