Early Signs of Pregnancy You Should Know

Author: Gozie Oloye LIBMS, MSc BioMedSci

Medical Reviewer:  Nnenna Chiloli, MBBS, MPH

Highlights

• Pregnancy symptoms can sometimes feel similar to symptoms noticed before or during a period.
• Pregnancy symptoms like nausea and frequent urination cannot confirm pregnancy.
•  A pregnancy test detects the hormone human chorionic gonadotropin (hCG) and confirms pregnancy.
• Home pregnancy tests can usually be taken from the first day of a missed period, but testing too early may give an inaccurate negative result.
• After a positive pregnancy test, start taking folic acid if not already started. 
• Avoiding alcohol and smoking, following pregnancy food-safety advice, and arranging antenatal care are important next steps.

Introduction

“My appetite has increased. I feel tired a lot and need to urinate more often. I haven’t seen my period. Could I be pregnant?”

Pregnancy symptoms can be different between women, and some early symptoms can mimic those experienced before or during your period. Tiredness, breast tenderness, bloating, and mood changes, for example, can occur in both early pregnancy and around the time of your period. This can make it difficult to know the difference based on symptoms alone.

Some women may notice very mild symptoms or no symptoms at all. Pregnancy symptoms can also differ from one pregnancy to another in the same woman.

So, symptoms alone aren't enough to confirm pregnancy. If your period is late or you have noticed changes that make you suspect pregnancy, the most reliable next step is to take a pregnancy test at the appropriate time.This article will discuss 10 early signs of pregnancy you should know.

10 Early Signs of Pregnancy

If this is your first pregnancy, you may not be familiar with the common early signs. This section explains the common symptoms.Women who have been previously pregnant may even notice a different set of symptoms than they had with their previous pregnancy. Here are 10 common early signs of pregnancy you may notice:

1. A missed period
2. Nausea and vomiting [1]
3. Breast pain
4. Frequent urination
5. Sensitivity to some smells
6. Fatigue
7. Increase in vaginal discharge which isn’t sore or irritated
8. Mood changes
9. Light spotting can occur; however, do not assume it's harmless.

   10. Bloating and constipation.

Not everyone will experience all or some of these symptoms. Whether these are present or not, they do not confirm pregnancy.  

When Do Early Pregnancy Symptoms Start?

Early pregnancy symptoms may start around 4 to 6 weeks.Some women in the early stages of pregnancy may miss these symptoms due to:

• Breastfeeding can affect menstrual cycles, making a missed period go unnoticed.
• Conditions like perimenopause can cause irregular bleeding that can look like early pregnancy symptoms
• Having very mild symptoms
• Spotting or bleeding in some women can be confused with a normal ‘light’ period
• Irregular periods: women with irregular periods may not notice they have a delayed or even a missed period 

Some women notice changes earlier, while others have few or no symptoms at all.

How Can You Confirm Pregnancy?

The most reliable way to confirm pregnancy is by taking a pregnancy test, as mentioned previously.There are different tests used to diagnose pregnancy, and they include:

1. Home Urine Pregnancy Tests 

These are the most common and can be purchased in the pharmacy. 
They work by detecting the main pregnancy hormone – human chorionic gonadotropin (hCG) in urine, which starts to be produced approximately 6 days after fertilisation. A positive result means that hCG has been detected. If the instructions are followed correctly, these tests provide accurate results.

2. Blood Pregnancy Tests

a. Qualitative hCG Test: This test checks for the presence of the pregnancy hormone in your blood by giving a positive or negative result. It can detect pregnancy earlier than urine tests, typically about 7-10 days after ovulation. b. Quantitative hCG Test: This test provides a quantitative amount of hCG in the blood. It is more sensitive than urine tests and can even detect very low levels of hCG.

3.  Ultrasound 

   Depending on the gestational age, pregnancy can be confirmed using either a transvaginal or transabdominal scan.

Repeat a negative test after a few days if you think you may be pregnant. If you are unsure when your next period is due, the NHS recommends testing at least 21 days after the last unprotected sex.

What Should You Do After a Positive Pregnancy Test?

1. You can confirm the pregnancy at a clinic or health centre and commence antenatal appointments to help keep you and your baby as healthy as possible. 

The benefits of early antenatal care include:

1. To closely monitor your baby’s growth
2. Medication review – if you’re currently on any medication, your doctor can opt for a safer alternative.
3. To check how you are feeling and offer you any support you may need
4. To check for conditions like pre-eclampsia and urinary tract infections.

2. Start taking iron supplements (30-60 micrograms daily) [2] and folic acid supplements (400 micrograms daily) from the first 12 weeks. Eat foods rich in folic acid. [3], [4]. Starting folic acid early can help prevent your child from having neural tube defects.
3. Stop drinking alcohol.
4. Get some help to support you with stopping smoking if you smoke.
5. Decide when and with whom to share the news.
6. Avoid raw fish and raw shellfish, as they can contain bacteria and/or parasites that can cause foodborne illnesses as well as pregnancy risks like preterm delivery or pregnancy loss. 
7. Don’t stop any medication you’re on without speaking with your doctor first.

Early Pregnancy Symptoms That Need Medical Advice

• Vaginal bleeding or a dark discharge from your vagina
• Severe vomiting where you are unable to keep food or fluids down
• Severe lower abdominal pain
• Pain when opening your bowels or urinating

Sudden severe abdominal pain accompanied by dizziness or fainting may indicate a ruptured ectopic pregnancy and needs emergency medical attention. While many early pregnancy symptoms are normal, some symptoms may require urgent medical attention. An Ectopic pregnancy (EP) occurs when a fertilised egg implants outside the womb and therefore requires medical assessment. [5] Symptoms commonly develop around the 4th and 12th weeks of pregnancy. Some women may have no symptoms.

Abdominal pain and vaginal bleeding are potential symptoms, which can make ectopic pregnancy difficult to recognise from symptoms alone. 

However, a sudden feeling of dizziness and feeling very pale can suggest a rupture/internal bleeding. Seek immediate medical attention.

Conclusion

Do not rely on symptoms alone to confirm if you’re pregnant, as pregnancy symptoms can vary between women and even between pregnancies in the same woman.Taking a pregnancy test can give you a clearer answer. 

If the result is positive, arrange your pregnancy care, start taking folic acid if you haven’t already, and follow pregnancy health and food-safety advice. Notice how you feel, and seek medical help if you notice any warning signs.

Frequently Asked Questions (FAQs)

1. How soon can I take a pregnancy test?

Most tests can be used from the first day of a missed period. But if the next period date is not known, NHS guidance recommends testing at least 21 days after the last unprotected sex.

2. Can I get a wrong negative test?

Testing too early can give a negative result because hCG may not yet be high enough to detect. 

3. Is spotting normal during early pregnancy?

Light bleeding can occur; however, do not assume it’s harmless.

4. Can I be pregnant without having any symptoms? 

Early pregnancy symptoms are not noticed by all pregnant people. Some have little or no symptoms.

5. Can I get a positive pregnancy test before I miss my period?

Yes, though testing early increases the possibility of a false-negative result. 

References

1. 1. Lowe SA, Steinweg KE. Review article: Management of hyperemesis gravidarum and nausea and vomiting in pregnancy. Emerg Medicine Australasia. 2022 Feb;34(1):9–15. Available from: https://doi.org/10.1111%2F1742-6723.13909

2. 2. Finkelstein JL, Cuthbert A, Weeks J, Venkatramanan S, Larvie DY, De-Regil LM, Garcia-Casal MN. Daily oral iron supplementation during pregnancy. Cochrane Database Syst Rev. 2024 Aug 15;8(8):CD004736. doi: 10.1002/14651858.CD004736.pub6. PMID: 39145520; PMCID: PMC11325660.  Available from: https://doi.org/10.1002/14651858.cd004736.pub6

3. 3, Lutz BH, Santos IDSD, Domingues MR, Murray J, Silveira MFD, Miranda VIA, Silveira MPT, Mengue SS, Pizzol TDSD, Bertoldi AD. Folic acid supplementation during pregnancy and postpartum depressive symptoms. Rev Saude Publica. 2023 Nov 3;57:76. Available from https://doi: 10.11606/s1518-8787.2023057004962. PMID: 37937650; PMCID: PMC10609648. Available from: https://doi.org/10.11606/s1518-8787.2023057004962

4. 4.Seyoum Tola, F. (2024). The concept of folic acid supplementation and its role in prevention of neural tube defect among pregnant women: PRISMA. Medicine, 103(19), e38154. Available from: https://doi.org/10.1097/MD.0000000000038154

5. 5. Mullany K, Minneci M, Monjazeb R, C Coiado O. Overview of ectopic pregnancy diagnosis, management, and innovation. Womens Health (Lond). 2023 Jan-Dec;19:17455057231160349. Available from https://doi.org/10.1177/17455057231160349

Disclaimer:
The information provided on this website is for general educational and informational purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

Published September 23, 2026