Your IUI Timeline: What to Expect Step-by-Step

Before your actual IUI cycle begins, we complete some important groundwork.

Initial consultation: During your first visit, we review your medical history, previous fertility testing, and discuss whether IUI is the right starting point for you. We also talk about whether a natural or medicated cycle makes more sense based on your ovulation patterns and diagnosis. If you’re wondering whether IUI or IVF is right for you, we can help you understand the differences.

Baseline testing: If you haven’t had recent fertility testing, we may recommend hormone bloodwork, transvaginal ultrasound, semen analysis, and confirmation of tubal patency.

Medication planning: If we recommend a medicated cycle, we discuss medication options and timing. At New Hope, we typically favor low-dose medications like Clomid or letrozole, which aligns with our gentler approach to fertility treatment.

Days 1–5: Baseline and Testing

Day 1 is the first day of full menstrual flow. You contact our office to report that your cycle has started, and we schedule your baseline appointment.

Days 2–3 are when your baseline ultrasound and bloodwork typically occur. During this transvaginal ultrasound, we check that:

• No ovarian cysts are present from the previous cycle
• Your uterine lining is appropriately thin
• Your ovaries are at a resting state

We also measure baseline hormone levels to confirm you’re at the beginning of your cycle.

Days 3–7: Ovulation Induction (If Using Medication)

If you’re doing a medicated IUI, you typically start fertility medication on day 3, 4, or 5 of your cycle.

Medications such as Clomid, Letrozole, or gonadotropins may be used to stimulate the development of 1–3 mature follicles. If medication is recommended, your doctor will determine the appropriate type and dosage for your cycle.

For natural cycle IUI, you skip this medication phase entirely and work with your body’s spontaneous ovulation.

Days 8–12: Monitoring and Ultrasound

Starting around day 8–10 of your cycle, we begin monitoring follicle growth with transvaginal ultrasounds and sometimes bloodwork to measure estrogen levels.

What we’re looking for:

• Follicle size: Mature follicles are typically 18–22mm in diameter
• Number of follicles: Ideally 1–3 for IUI
• Endometrial thickness: At least 7–8mm for optimal implantation

You may have 1–2 monitoring appointments during this phase. These visits are usually quick, often done early in the morning, so you can get to work.

Research shows that follicle size and timing are among the most critical factors in IUI success. A 2021 study in Fertility and Sterility found that hCG administration at a lead follicle size of 21.1–22.0mm is associated with higher odds of clinical pregnancy in clomiphene citrate IUI cycles, and another study confirmed that pregnancy rates significantly increased when follicles reached 18–20mm or larger.

Days 13–14: The Trigger Shot and Insemination

Once your lead follicle reaches the right size (usually 18–20mm or larger), we schedule your trigger shot and IUI procedure.

The trigger shot: You receive an injection of human chorionic gonadotropin (hCG) or sometimes a GnRH agonist. This medication triggers ovulation within 36–40 hours. We give you precise timing for when to take this shot, often in the evening.

The IUI procedure: Your IUI is scheduled 24–36 hours after your trigger shot, timed to place sperm in your uterus just before or as you ovulate. Here’s what happens:

1. Sperm preparation: Your partner provides a fresh semen sample (or we thaw donor sperm), which is “washed” in the lab to concentrate the healthiest, most motile sperm. This process takes about 30–60 minutes.
2. The insemination: You lie on an exam table similar to a pap smear. We insert a speculum, clean your cervix, and pass a thin, flexible catheter through your cervix into your uterus. The prepared sperm sample is slowly injected through this catheter.
3. Rest period: You rest on the table for 5–10 minutes after the procedure.

The entire procedure takes about 5–10 minutes and is generally painless, though you may feel mild cramping similar to menstrual cramps. Most patients return to normal activities the same day.

Days 15–28: Progesterone and Patience

After your IUI, the waiting begins. This period is often called the “two-week wait.”

Progesterone support (optional): Some doctors prescribe progesterone supplementation after IUI to support the uterine lining. This can be vaginal suppositories, oral pills, or injections. At New Hope, we individualize this decision based on your hormone levels and history.

What you can and can’t do: You can resume all normal activities immediately after IUI, including returning to work, exercising, having intercourse, and traveling.

There’s no evidence that bed rest improves IUI success rates. A 2017 randomized controlled trial in Human Reproduction found that 15 minutes of immobilization after IUI showed no benefit compared to immediate mobilization, with similar pregnancy rates in both groups.

The pregnancy test: About 14 days after your IUI, you’ll come in for a blood pregnancy test that measures hCG levels. This is more accurate than home urine tests at this early stage.

If the test is positive, we schedule follow-up blood tests and eventually an ultrasound. If it’s negative, we discuss next steps, which might include trying another IUI cycle or considering IVF.

At New Hope Fertility, our approach to IUI reflects our broader treatment philosophy: work with your body using the minimum effective intervention.

Low-dose medication protocols: When medication is needed, we typically start with oral medications (Clomid or letrozole) rather than jumping to injectable gonadotropins. This gentler approach reduces side effects, lowers costs, and still produces good outcomes for many patients.

Individualized monitoring: We don’t use a rigid protocol for every patient. Your monitoring schedule is based on your specific response, history, and medication regimen.

Clear communication: Timing sometimes creates anxiety during IUI cycles. Our team provides same-day results and clear instructions about next steps.

Realistic expectations: We’re honest about IUI success rates and help you decide how many cycles to try before considering other options. For most patients, if IUI is going to work, it typically does within 3–4 cycles.