Early Signs of Pregnancy and When to Take a Test

Common Early Signs

The following are commonly reported early pregnancy symptoms. However, many of these can also be caused by other factors such as stress, illness, or hormonal changes.

Missed Period

This is often the first noticeable sign, especially if your periods are usually regular. However, periods can also be late for other reasons.

Nausea (Morning Sickness)

Despite the name, nausea can occur at any time of day. It often begins around 4–6 weeks of pregnancy, though it varies widely.

Fatigue

Feeling unusually tired is common in early pregnancy, partly due to rising progesterone levels.

Breast Tenderness

Breasts may feel sore, swollen, or tender. Nipples may become more sensitive.

Light Spotting or Cramps

Some people experience light bleeding (implantation bleeding) or mild cramping around the time their period would be due.

Other Possible Signs

• Increased urination
• Food aversions or cravings
• Mood changes
• Bloating
• Heightened sense of smell

Symptoms Are Not Proof

Important: Having one or more of these symptoms does not confirm pregnancy. Many of these symptoms overlap with premenstrual syndrome (PMS), stress, and other conditions. The only way to confirm pregnancy is with a pregnancy test and, if positive, a healthcare provider's assessment.

When to Take a Pregnancy Test

• Most reliable timing: From the first day of a missed period, or approximately 2–3 weeks after unprotected sex (NHS).
• Testing too early can give a false negative because the pregnancy hormone (hCG) may not yet be at detectable levels.
• First morning urine tends to have the highest concentration of hCG, making the test slightly more reliable.

How Pregnancy Tests Work

Home pregnancy tests detect human chorionic gonadotropin (hCG), a hormone produced after a fertilised egg implants in the uterus. hCG levels rise rapidly in early pregnancy, doubling roughly every 48–72 hours.

• Most tests claim to be accurate from the first day of a missed period.
• Some "early detection" tests may work a few days before a missed period, but accuracy is lower.
• Blood tests at a clinic can detect pregnancy slightly earlier than urine tests.

What If the Test Is Negative?

If the test is negative but your period still has not arrived:

• Wait a few days and test again.
• Consider whether you tested too early.
• Other factors — stress, weight changes, illness, hormonal conditions — can delay periods.
• If your period remains absent, see a healthcare provider.

Red Flags That Need Medical Attention

Seek medical care immediately if you experience:

• Severe abdominal or pelvic pain — Could indicate an ectopic pregnancy (a pregnancy outside the uterus), which is a medical emergency.
• Heavy bleeding (soaking through a pad in an hour) — Especially if accompanied by pain or dizziness.
• Fainting or dizziness with abdominal pain.
• Fever with abdominal pain or bleeding.

These symptoms require urgent medical evaluation regardless of pregnancy test results.

When to See a Healthcare Provider

See a healthcare provider if:

• Your pregnancy test is positive — to confirm the pregnancy and begin prenatal care.
• Your test is negative but your period is more than two weeks late.
• You are experiencing symptoms that concern you.
• You are unsure about your test results.
• You need support in deciding your next steps.