Implantation Bleeding: Timing, Appearance, and What to Expect

Implantation bleeding occurs when the embryo attaches to the uterine lining, typically:

• Timing: 6–12 days after conception (most often 10–14 days)
• Duration: Few hours to 1–2 days
• Appearance: Light spotting—pink, brown, or light red; not heavy like a period
• Associated symptoms: Mild cramping, possible breast tenderness

Key Differences from Menstruation

• Much lighter flow (spotting only)
• Shorter duration
• No clots
• Color often brownish (older blood)

Not all pregnant people experience it (~25–30%). If uncertain, a pregnancy test after a missed period is definitive.