Implantation Bleeding: Timing, Appearance, and How to Distinguish from a Period

Implantation bleeding is light spotting that occurs when the fertilized egg attaches to the uterine lining.

Typical Characteristics

• Timing: 10–14 days after conception (around the time of expected period).
• Color: Light pink or brown (not bright red).
• Flow: Very light—spotting only, not a full flow.
• Duration: A few hours to 1–2 days.
• Symptoms: Usually no cramping or mild cramping only.

Key Points

• Not all pregnant women experience it.
• Can be mistaken for a light period.
• If bleeding is heavy, bright red, or painful, consult a provider to rule out miscarriage or ectopic pregnancy.