Early Pregnancy Symptoms: Signs, When to Test and What to Do Next

For many women, the first sign of pregnancy is a late period. But other changes can appear earlier, and not everyone gets the same symptoms. Some women feel pregnant within days, while others notice almost nothing for weeks. This guide explains the common signs, how and when to confirm pregnancy, and what to do next.

The most reliable early sign: a missed period

If your cycles are regular and your period is more than a week late, pregnancy is likely. Stress, illness, weight change, PCOS, thyroid problems, breastfeeding and some contraceptives can also delay periods, so a test is needed to confirm.

Common early symptoms

• Breast changes: tenderness, fullness, tingling, darker nipples.
• Nausea or vomiting ("morning sickness"): often begins around week 6, though it can occur at any time of day.
• Tiredness: because of rising progesterone and increased blood volume.
• Frequent urination: the kidneys work harder and the womb begins pressing on the bladder.
• Food cravings or aversions and a heightened sense of smell.
• Mild cramping and light spotting: implantation bleeding can occur around the time the period was due, and is lighter and shorter than a normal period.
• Bloating, constipation and mood swings.
• Metallic taste, headaches or dizziness.

None of these alone proves pregnancy, because many also occur before a normal period.

When and how to test

Home urine tests detect the hormone hCG. They are most reliable from the first day of a missed period. Testing before that can give a false negative because hCG may still be low.

1. Use first-morning urine, when hCG is most concentrated.
2. Follow the instructions and read the result within the stated time.
3. If it is negative but your period still does not come, repeat after 3-5 days.
4. A positive result is almost always correct. Confirm with a doctor.

A blood test can detect pregnancy earlier and measure the exact hCG level. An ultrasound scan, usually from about 6 weeks, confirms that the pregnancy is in the womb and checks the heartbeat.

Work out your due date

Doctors count pregnancy from the first day of your last menstrual period, so you are "4 weeks pregnant" at the time of a missed period. Use our pregnancy due date calculator for an estimate, and your doctor will confirm the dates by ultrasound, particularly if your cycles are irregular.

What to do as soon as you know

1. Start folic acid. Take 400 micrograms daily to reduce the risk of neural tube defects such as spina bifida. Women with diabetes, epilepsy, obesity or a previous affected baby may be advised a higher dose by a doctor.
2. Register your pregnancy. In Sri Lanka, inform your area Public Health Midwife (PHM) or visit the antenatal clinic, where you will receive a pregnancy record and free antenatal care, supplements and screening.
3. Book an early visit with a doctor, ideally before 8-12 weeks. Blood group, haemoglobin, blood sugar, urine tests and blood pressure are checked.
4. Review your medicines. Some drugs are unsafe in pregnancy, including certain antiepileptics, isotretinoin, some blood-pressure medicines, and some antibiotics and herbal products. Do not stop medicines for chronic conditions without medical advice.
5. Check your vaccinations. Rubella immunity and tetanus protection matter.

Foods and habits to avoid

• Alcohol and smoking: there is no known safe level of alcohol in pregnancy, and smoking harms the baby's growth.
• Raw or undercooked meat, fish and eggs, and unpasteurised milk or cheese, which carry infection risks.
• Fish high in mercury, such as swordfish and large shark.
• Excess caffeine: keep below about 200 mg a day, roughly two cups of coffee.
• Unripe (raw) papaya and herbal remedies of uncertain safety: traditionally avoided, and there is no benefit in taking risks. Ask your doctor about any herbal product.
• Very hot baths or saunas and avoidable exposure to cat litter, which can carry toxoplasmosis.

Healthy eating

Eat regular balanced meals with vegetables, fruit, pulses, fish, eggs and whole grains. You do not need to "eat for two"; only a small increase in calories is needed in the second and third trimesters. Small, frequent meals, dry crackers, ginger and cold foods can ease nausea.

Warning signs: get medical help promptly

• Severe one-sided lower abdominal pain, shoulder-tip pain, dizziness or fainting, with or without bleeding. These may signal an ectopic pregnancy, which is an emergency.
• Heavy vaginal bleeding (soaking a pad an hour) or passing clots or tissue, which may indicate miscarriage.
• Severe, persistent vomiting where you cannot keep fluids down (hyperemesis gravidarum), with weight loss or dehydration.
• Fever, burning urine or foul-smelling discharge.
• Sudden severe headache, blurred vision or swelling in later pregnancy.

About 1 in 5 known pregnancies end in miscarriage, mostly because of chromosome problems that are nobody's fault. If it happens, medical care and emotional support are available.

Pregnancy symptoms are not the same for everyone

Having fewer symptoms does not mean something is wrong, and strong symptoms do not guarantee a particular outcome. If you are worried, see your doctor instead of relying on symptom checklists.

When to see a doctor

See a doctor if you have a positive test, a missed period with pelvic pain or bleeding, a history of ectopic pregnancy or miscarriage, or health conditions such as diabetes, hypertension, epilepsy or thyroid disease that need planning.

References

• Sri Lanka Ministry of Health, Family Health Bureau: antenatal care guidelines
• World Health Organization: recommendations on antenatal care for a positive pregnancy experience
• NICE guideline NG201: antenatal care