Pregnancy Blog

The Ultimate Guide to Pregnancy Tests

Rachael Kirkwood

The Ultimate Guide to Pregnancy Tests

Written by
Rachael Kirkwood

Finding out you're pregnant can be one of the most exciting yet nerve-wracking moments in your life. Whether you're actively trying to conceive or just suspecting a pregnancy, knowing how and when to take a pregnancy test is crucial.

In this guide, we'll cover everything you need to know about pregnancy tests, including the best options, how to use a pregnancy test, and what to do when you find out you're pregnant.

Signs of Pregnancy: Do You Need to Take a Test?

If you’re experiencing any of the following signs of pregnancy, it may be time to take a pregnancy test:

  • Missed period
  • Nausea or morning sickness
  • Tender or swollen breasts
  • Fatigue and tiredness
  • Frequent urination
  • Mood swings
  • Stomach cramps

If you have missed your period and have any of these early pregnancy symptoms, I would recommend taking a pregnancy test. If you’re unsure, take a pregnancy test today or visit your doctor for confirmation.

How Early Can I Test for Pregnancy?

One of the most common questions is, "how early can I test for pregnancy?" Most home pregnancy tests, including the Clear Blue Pregnancy Test, can detect pregnancy hormones as early as 6 days before your missed period. However, for the most accurate result, it’s recommended to wait until the first day of your missed period.

If you’re 4 weeks pregnant, your HCG (human chorionic gonadotropin) levels should be high enough for a standard home pregnancy test to detect. By the time you’re 5 weeks pregnant, the results will be even clearer.

Beta HCG Levels - Week by Week

  • 3 weeks pregnant: 5–50 mIU/mL
  • 4 weeks pregnant: 10–425 mIU/mL
  • 5 weeks pregnant: 19–7,340 mIU/mL
  • 6 weeks pregnant: 1,080–56,500 mIU/mL

Best Pregnancy Test

With so many options available, choosing the best pregnancy test can be overwhelming. Here are some of the top-rated pregnancy tests:

Clear Blue Pregnancy Test

The Clearblue Digital Pregnancy Test with Weeks Indicator is the only home pregnancy test that not only tells you if you're pregnant but also estimates how many weeks along you are.

With over 99% accuracy from the day of your expected period, this digital test provides a clear ‘Pregnant’ or ‘Not Pregnant’ result, eliminating the uncertainty of interpreting lines.

If positive, it also displays an estimated conception timeframe (1-2, 2-3, or 3+ weeks), based on the levels of HCG in your urine. This makes it an excellent choice for those looking for both early detection and insight into their pregnancy timeline.

First Response Early Result Pregnancy Test

This is one of the most trusted and sensitive home pregnancy tests, designed to detect pregnancy up to 6 days before your missed period. With its ultra-sensitive technology, it can detect even low levels of HCG (human chorionic gonadotropin) with over 99% accuracy from the day of your expected period.

The easy-to-read two-line result appears in just 3 minutes, giving you fast and reliable answers when you need them most. Whether you're actively trying to conceive or just want early reassurance, First Response Early Result provides peace of mind with its clinically proven, early detection capabilities.

Easy@Home Pregnancy Test and Ovulation Strips Kit

A reliable and convenient way to track your fertility and early pregnancy at home. Designed for accuracy and ease of use, the ovulation test strips detect your LH surge, helping you identify your most fertile days, while the pregnancy test strips provide quick and clear results.

This kit pairs seamlessly with the Premom app, allowing you to log your results, track your cycle, and predict ovulation with AI-powered insights. Whether you're trying to conceive or simply monitoring your cycle, Easy@Home offers an affordable and effective solution for fertility tracking—all from the comfort of your home.

How to Use a Pregnancy Test

To ensure the most accurate result, follow these steps:

Check the Expiry Date – Using an expired test can lead to incorrect results.

Use Your First-Morning Urine – HCG levels are more concentrated in the morning.

Follow the Instructions – Some tests require midstream collection, while others require dipping into a collected sample.

Wait the Recommended Time – Don’t check too early, as results may not be fully developed.

What Do the Lines on a Pregnancy Test Mean?

Pregnancy tests work by detecting human chorionic gonadotropin (HCG), a hormone that your body starts producing after implantation. The lines on a pregnancy test can indicate different results, depending on the type of test you're using.

Two Lines (Both Dark or Faint) – Positive Result

If you see two lines, even if one is faint, it generally means you are pregnant. The second line appears when the test detects HCG in your urine. A faint positive result may mean:

  • You are early in pregnancy and HCG levels are still low.
  • Your urine is diluted (testing later in the day can cause this).
  • A faulty or expired test (though rare).

Next Steps:

  • Retest in 48 hours to see if the line darkens as HCG levels rise.
  • Confirm with a blood test from your doctor for accuracy.

One Line – Negative Result

If you see only one line, it usually means you are not pregnant. However, false negatives can occur if:

  • You tested too early (before enough HCG is present).
  • You drank too much fluid before testing, diluting the urine.
  • The test is expired or defective.

Next Steps:

  • If your period doesn’t arrive, test again in a few days.
  • Use first-morning urine for the most accurate result.

One Dark Line, One Faint Line

A faint second line could indicate early pregnancy or an evaporation line (a colourless line appearing after the test has dried).

How to Tell the Difference:

  • A true positive faint line has colour (pink or blue, depending on the test brand).
  • An evaporation line is usually grey or colourless and appears after the test dries.

If unsure, test again in 48 hours or try a digital pregnancy test, which clearly states "Pregnant" or "Not Pregnant."

No Lines or a Blank Test

If no lines appear, the test did not work properly. This could be due to:

  • A faulty or expired test.
  • Not enough urine applied.
  • Testing incorrectly.

Next Steps:

  • Retest with a new pregnancy test and follow the instructions carefully.

What to Do When You Find Out You're Pregnant?

If you’ve just received a positive test result and are wondering what to do when you find out you’re pregnant, here are the next steps:

Confirm Your Pregnancy – Visit your doctor or healthcare provider for a pregnancy test / blood test.

Use a Pregnancy Calculator – Find out your estimated due date using our Pregnancy Due Date Calculator.

Start Taking Prenatal Vitamins – Essential nutrients like folic acid support healthy fetal development.

Book Your First Midwife Appointment – In the UK, this typically happens around 8–10 weeks. Your doctor will arrange this for you if you contact them

Adjust Your Lifestyle – Avoid alcohol, smoking, and limit caffeine intake for a healthy pregnancy.

Taking a pregnancy test can be an emotional experience, whether you're hoping for a positive result or feeling nervous about an unplanned pregnancy. Choosing the best pregnancy test and knowing when and how to test can make the process much easier.

Due Date Calculator

Don’t forget to use our Pregnancy Calculator to estimate your due date once you get a positive result!

For more pregnancy tips and guidance, visit our blog and stay informed throughout your journey!

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