Clear Blue Blinking Smiley: What It Means, How to Use It, and Common Mistakes
Trying to conceive can be exciting, but it often brings confusion—especially when it comes to understanding ovulation tests. If you’ve picked up a Clearblue ovulation test and noticed a blinking smiley face, you might wonder what it means, how to use the device correctly, and how it fits into your fertility journey. This article will explain everything you need to know about the Clear Blue blinking smiley, including how it works, tips for accurate results, myths to avoid, and answers to common questions.
What Is The Clear Blue Blinking Smiley?
The Clearblue Advanced Digital Ovulation Test uses a digital reader to show your fertile window. Unlike basic strip tests, it shows two different smiley faces—a blinking smiley and a solid smiley—to help you better identify your most fertile days.
The blinking smiley appears when the test detects a rise in estrogen, signaling that your body is preparing to ovulate. This is the High Fertility period. The solid smiley means your body has detected a surge in luteinizing hormone (LH), marking your Peak Fertility—the best time for conception.
How Does The Clear Blue Blinking Smiley Work?
Clearblue’s test is based on changes in two hormones:
- Estrogen: Increases a few days before ovulation.
- Luteinizing hormone (LH): Surges 24–36 hours before ovulation.
When you use the test, it tracks both hormones in your urine. Here’s what the symbols mean:
- Empty circle: Low fertility
- Blinking smiley: High fertility (estrogen rising)
- Solid smiley: Peak fertility (LH surge detected)
This gives you a bigger fertility window than tests that look for LH alone. The blinking smiley can show up for several days before you see a solid smiley. This helps you plan intercourse for the best chances of pregnancy.
The Science Behind The Test
The Clearblue Advanced Digital Ovulation Test uses dual-hormone detection. It measures the rise in estrogen (which usually happens 3–6 days before the LH surge) and then detects the LH surge itself. This gives you more warning than traditional LH-only tests, which may only show peak fertility for one or two days.
How To Use The Clear Blue Ovulation Test Correctly
Getting accurate results with Clearblue’s test is easy, but following the instructions is key. Here’s a step-by-step guide:
- Choose the right day to start testing: Use the included chart to find your starting day, based on your cycle length. For example, if your cycle is 28 days, start testing on day 8.
- Test at the same time each day: Early morning is best, but pick a time you can stick to.
- Don’t urinate for at least 4 hours before testing: This helps hormone levels build up in your urine.
- Limit fluid intake before testing: Too much water can dilute hormones and affect results.
- Insert the test stick into the holder: Wait for the ‘ready’ symbol before testing.
- Collect your urine: You can hold the stick in your urine stream for 5–7 seconds or dip it in a cup for 15 seconds.
- Wait for results: After about 5 minutes, you’ll see one of the three symbols.
Example: Calculating Your Start Day
If your cycle is usually 30 days, you should start testing on cycle day 13. Always use your shortest recent cycle to decide the start day. If your cycles vary a lot, talk to a doctor for advice.
What Does The Blinking Smiley Mean?
The blinking smiley face means your estrogen is rising—your body is getting ready to ovulate, but has not yet released the egg. This is your High Fertility window.
- You may see the blinking smiley for 2–6 days in a row.
- This is a good time to start having sex every 1–2 days.
- You should keep testing until you see the solid smiley (Peak Fertility).
Why Can The Blinking Smiley Last Several Days?
Not every woman’s hormones follow the textbook. For some, estrogen rises slowly, leading to more days of blinking smiley. For others, it may last just a day or two. This is normal.
Non-obvious insight: Some users panic if they see the blinking smiley for many days, fearing a problem. In most cases, this simply means your body is taking its time gearing up for ovulation.

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Blinking Smiley Vs. Solid Smiley: What’s The Difference?
It’s easy to mix up the two smiley faces, but their meaning is crucial for timing intercourse.
| Symbol | Hormone Detected | Fertility Level | Action |
|---|---|---|---|
| Empty circle | None | Low | Wait, keep testing |
| Blinking smiley | Estrogen rising | High | Have sex every 1–2 days |
| Solid smiley | LH surge | Peak | Have sex within 24–36 hours |
How Long Does The Blinking Smiley Last?
Most women see the blinking smiley for 2–4 days, but it’s normal to see it for up to 6 days. Sometimes, you may see it for just 1 day, or for more than a week. This variation depends on:
- Your cycle length
- How quickly your estrogen rises
- When you start testing
If you see only blinking smileys and never get a solid smiley, it could mean you missed your LH surge or your body did not ovulate this cycle. If this happens for several cycles, speak to a healthcare provider.

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What To Do When You See The Blinking Smiley
Once you see the blinking smiley, start having intercourse every 1–2 days. Keep testing each morning until you see the solid smiley. When you see the solid smiley, this is your most fertile time—try to have sex that day and the next day.
Non-obvious insight: Some couples only try on the day of the solid smiley. In reality, sperm can live in the body for up to 5 days, so having sex during the blinking smiley days improves your chances.
Troubleshooting: Common Problems And Solutions
Using digital ovulation tests is easy, but sometimes things don’t go as planned. Here are common issues and fixes:
1. Only Getting Blinking Smileys, No Solid Smiley
- You may have missed your LH surge (it can be short)
- Your body may not have ovulated this cycle (not unusual)
- You started testing too late (the surge happened before you began)
Tip: Next cycle, start testing earlier. If this happens repeatedly, consult a doctor.
2. Blinking Smiley Lasts More Than 7 Days
- Some women naturally have a long high-fertility phase.
- Certain medications or medical conditions can cause long estrogen rises.
Tip: If you get only blinking smileys for weeks, check with your healthcare provider.
3. No Smileys At All
- You may be testing too late or too early in your cycle.
- Diluted urine can reduce hormone levels.
Tip: Test at the same time each day, and limit fluids before testing.
4. Device Errors Or Symbols Not Changing
- Make sure you’re using the correct test sticks for your device.
- Always insert the stick properly and keep the holder dry.
Tip: If the reader malfunctions, contact Clearblue customer service.
How Clear Blue Compares To Other Ovulation Tests
Clearblue’s blinking smiley feature sets it apart from basic ovulation tests. Here’s how it compares:
| Feature | Clearblue Advanced Digital | Standard LH Test Strips | Saliva/Ovulation Microscopes |
|---|---|---|---|
| Hormones Detected | Estrogen + LH | LH only | Estrogen changes (indirect) |
| Digital Reading | Yes (Smiley faces) | No (lines) | No (crystal patterns) |
| Fertile Days Identified | 4–6 | 1–2 | 2–3 |
| Ease of Use | Very easy | Medium | Requires practice |
| Cost | Higher | Lower | Lowest (after initial purchase) |
Non-obvious insight: Many users think digital means “more accurate,” but the main benefit is the larger fertility window and less guessing about reading faint lines.
Tips For Getting The Most Accurate Results
- Test at the same time daily: Hormone levels can change throughout the day. Morning is usually best.
- Limit fluid intake before testing: Too much water can dilute hormone levels.
- Don’t skip days: Missing a day can cause you to miss your LH surge.
- Follow instructions exactly: Even small mistakes (like using the wrong stick) can affect results.
- Track your cycle: Keep a record of your period and ovulation results for better planning.
Who Should Use The Clear Blue Blinking Smiley Test?
The Clearblue Advanced Digital Ovulation Test is best for:
- Women with regular cycles (21–42 days)
- Those who want to maximize their chances of conception
- Couples trying to conceive naturally
- Anyone confused by line-based tests
It’s less suitable for those with very irregular cycles, PCOS, or hormone imbalances. If you’re unsure, ask your doctor before using.
When The Blinking Smiley Might Not Work As Expected
Medical Conditions
Certain health issues can affect estrogen and LH levels, leading to confusing results:
- Polycystic ovary syndrome (PCOS): Can cause high estrogen or irregular LH surges.
- Perimenopause: Hormones become erratic.
- Recent pregnancy or miscarriage: Hormone levels may not have settled.
If you have these conditions, ovulation tests may not be accurate. Consider charting your temperature or seeking medical advice.
Medications
Some fertility drugs, birth control pills, and hormone therapies can affect test results. Always check with your provider if you’re on medication.
Real-life Example: Using The Blinking Smiley
Sarah, age 31, has a 28-day cycle. She starts testing on day 8, following the chart. On day 10, she sees a blinking smiley. She and her partner have sex every other day. On day 14, she sees a solid smiley.
They have sex that day and the next. This gives her the best chance to conceive.
Mistakes Beginners Often Make
- Stopping after the first blinking smiley: Keep testing daily until you see the solid smiley.
- Not timing intercourse: The high fertility phase is a window—missing it can reduce your chances.
- Using too much or too little urine: Always follow the instructions for sample collection.
- Not recording results: Keeping a log helps spot patterns or problems.
- Assuming one negative cycle means infertility: It’s normal not to conceive right away. Most healthy couples take several cycles.
Myths About The Blinking Smiley
- Myth: The blinking smiley means you’re ovulating right now.
- Truth: It means your body is preparing to ovulate. Peak fertility is still a few days away.
- Myth: More blinking smiley days mean a problem.
- Truth: Everyone’s hormone patterns are different. Long high-fertility phases are normal for some women.
- Myth: You must have sex only on the solid smiley day.
- Truth: Sperm can live for several days. Having sex during the blinking smiley days increases your chances.
Other Fertility Tracking Methods
While the Clearblue blinking smiley offers convenience, there are other ways to track ovulation:
- Basal body temperature (BBT): Charting your temperature each morning can show when ovulation has occurred, but not before.
- Cervical mucus monitoring: Fertile mucus is clear, stretchy, and slippery.
- Cycle tracking apps: Can help predict fertile days, but are less precise than hormone tests.
Many women use multiple methods together for the best results.

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The Cost Of Clear Blue Vs. Other Ovulation Tests
Cost is a common concern. The Clearblue Advanced Digital Ovulation Test is more expensive than basic test strips, but it can be worth it for the added clarity and longer fertile window.
| Brand/Test Type | Estimated Price (per cycle) | Fertile Days Detected | Digital Display |
|---|---|---|---|
| Clearblue Advanced Digital | $25–$40 | 4–6 | Yes |
| Basic LH strips | $10–$15 | 1–2 | No |
| Fertility microscopes | $25 (one-time) | 2–3 | No |
When To See A Doctor
If you have been trying to conceive for 12 months (or 6 months if over age 35) without success, consult a fertility specialist. Also see a doctor if:
- You never get a solid smiley over several cycles
- Your cycles are always very irregular
- You have other symptoms like severe pain or heavy bleeding
For more on fertility and ovulation, check the Mayo Clinic’s guide.
Frequently Asked Questions
What Should I Do If I Get Only Blinking Smileys And Never A Solid Smiley?
If you see only blinking smileys across several cycles, you may be missing your LH surge or not ovulating. Try starting the test earlier in your cycle next time. If the problem continues, talk to a healthcare professional.
Can I Reuse The Clearblue Test Holder With New Sticks?
Yes, you can reuse the digital holder for several cycles as long as you use the correct test sticks. Always follow the manufacturer’s instructions for compatibility.
Is The Blinking Smiley Accurate For Women With Irregular Periods?
The blinking smiley is best for women with regular cycles. If your cycles are irregular, the test may be less accurate. Consider tracking other signs of ovulation or consulting a doctor.
Will Drinking Lots Of Water Affect My Test Results?
Yes, drinking too much water before testing can dilute hormone levels in your urine. Try not to drink for at least two hours before testing for the most accurate result.
How Soon After A Solid Smiley Should I Have Intercourse?
You should have intercourse as soon as you see the solid smiley, and again the next day if possible. This is your peak fertility window, when the chances of conception are highest.
Conclusion
Understanding the Clear Blue blinking smiley can make the journey to pregnancy clearer and less stressful. By using the test correctly and knowing what your results mean, you can time intercourse for the best chance of success. Remember, every woman’s cycle is unique, so patience and tracking over several months are key. And if you ever feel uncertain, don’t hesitate to reach out to a healthcare professional for guidance.