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Early signs of pregnancy: what to look for and when

Early pregnancy rarely announces itself clearly. Some women notice a change within days of implantation; others feel completely normal until well past a missed period. Both are common, and neither says anything about how the pregnancy is going.

A calm morning scene with a cup of tea and a pregnancy test on a table
Written by HelloMommy editorial teamMedically reviewed by Medical review boardUpdated Published 3 min read

The signs that show up first

Most early pregnancy symptoms come from one hormone: hCG, which the developing placenta starts producing after implantation. Levels roughly double every two to three days, which is why the first fortnight can feel like nothing at all, and then like everything at once.

  • A missed period. Still the most reliable early sign if your cycle is usually regular.
  • Tender, heavier breasts. Often the very first change women notice, sometimes before the test.
  • Tiredness. Not ordinary tiredness — a heaviness that arrives even after a full night’s sleep.
  • Nausea. It can start around week 5 or 6, and rarely limits itself to mornings.
  • Needing the toilet more often. Blood flow to the kidneys rises early in pregnancy.
  • A sharper sense of smell. Coffee, cooking oil and perfume are the usual first casualties.

When to take a test

Home tests measure hCG in urine. From the day your period is due, a test is highly accurate. Testing earlier can work, but a negative result at that point does not rule pregnancy out — the hormone may simply be too low to detect.

  1. Use the first urine of the day, when hCG is most concentrated.
  2. Check the expiry date and follow the timing on the leaflet exactly.
  3. If the result is negative and your period does not arrive, test again in three days.

What to do after a positive test

There is no rush to see anyone in the first days, but two things are worth doing straight away: start a prenatal vitamin containing 400 µg of folic acid, and stop alcohol and smoking. Then book your first antenatal appointment — in most countries it takes place between weeks 8 and 12.

If you know the first day of your last period, you already have what you need to work out your due date and follow your pregnancy week by week.

Frequently asked questions

How early can pregnancy symptoms start?

Some women notice tender breasts or fatigue from around week 4, shortly after implantation. Many notice nothing until week 6 or later, and some have almost no symptoms at all.

Can you be pregnant and get a negative test?

Yes, if you test too early. hCG doubles every two to three days, so a test taken before your period is due may not detect it. Retest in three days if your period does not arrive.

Is spotting in early pregnancy normal?

Light spotting around the time your period was due can be implantation bleeding and is common. Heavy bleeding, or bleeding with pain, needs to be checked the same day.

Sources

This article is for general information only and is not medical advice. Always talk to your doctor or midwife about your own pregnancy.

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