Early Signs of Pregnancy
From implantation spotting in week 3 to morning sickness in weeks 5–8 — here is a complete guide to the earliest pregnancy symptoms and when to expect them.
Medically reviewed by
MBBS, MD — Gynecologist & Obstetrician
Last reviewed:
Feb 2026
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Week 1–2
Before Conception
- This is the pre-ovulation phase — not yet pregnant
- Fertile window approaching
- Body preparing for ovulation
💡 Gestational age begins here, but conception has not yet occurred.
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Week 3
Implantation Week
- Implantation spotting (light pink/brown discharge, 6–12 days after conception)
- Mild cramping from implantation
- Basal body temperature stays elevated
- HCG hormone begins to rise
💡 Most women don't yet know they are pregnant.
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Week 4
Missed Period
- Missed period (most noticeable sign)
- Breast tenderness and heaviness
- Mild fatigue begins
- Bloating and mild abdominal pressure
- Home pregnancy test turns positive
💡 This is the first week most women suspect pregnancy.
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Weeks 5–6
Nausea Begins
- Nausea (with or without vomiting) — often not just mornings
- Heightened sense of smell
- Food aversions (certain smells/tastes become repulsive)
- Food cravings
- Frequent urination
- Increased saliva
💡 Morning sickness affects about 70–80% of pregnant women.
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Weeks 7–8
Peak Fatigue & Nausea
- Extreme tiredness — needing more sleep than usual
- Nausea and vomiting at its peak
- Emotional sensitivity and mood swings
- Headaches from hormonal changes
- Constipation (progesterone slows digestion)
- Slight visible bloating
💡 This is often the most challenging week for early pregnancy symptoms.
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Weeks 9–12
Symptoms Peak Then Ease
- Nausea gradually improving for most women
- Breast growth continues
- Visible belly beginning
- Skin changes (acne, or a pregnancy glow)
- Emotional swings continue
- Dizziness from blood pressure changes
💡 By week 13, most first-trimester symptoms begin to ease.
When to Take a Pregnancy Test
Home pregnancy tests detect hCG (human chorionic gonadotropin), a hormone produced after implantation. For the most accurate result:
- Test on the first day of your missed period or later for best accuracy
- Use first morning urine (most concentrated hCG levels)
- If negative but still no period after 3–5 days, test again
- A positive result at any time should be confirmed with your healthcare provider
Frequently Asked Questions
Common questions answered by our medical team
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