27/01/2026
Why is your IUI failing despite "perfect" s***m and eggs?
You’ve done the scans, your follicles are the perfect size, and his "wash" count is in the millions. You go into the procedure with high hopes, but two weeks later, you’re staring at a single red line again. It feels like a mathematical impossibility, but the truth is, IUI often fails because it’s a "blind" procedure.
The Hidden Barrier: IUI simply puts the s***m at the front door (the uterus), but it doesn't guarantee the "handshake." Two major things often go wrong that no ultrasound can see: Tubal Transport and Fertilization Failure. Even if your tubes are "open" on a dye test, they might not be functional. If the microscopic hairs (cilia) inside your tubes aren't waving the egg and s***m toward each other, they will never meet.
Furthermore, even if they do meet, "Unexplained Infertility" often hides a "shell" problem where the s***m physically cannot pe*****te the egg's outer layer. Since IUI happens inside the body, there is no way for a doctor to see if fertilization actually occurred. You aren't "failing" to get pregnant; your body might just be hitting a biological roadblock that only IVF can bypass.
