Implantation Bleeding: Occurs in Only 25–30% of Pregnancies

Implantation bleeding is not universal. It occurs in approximately 25–30% of pregnant women, typically 10–14 days after conception (around expected menses). Characteristics:

• Light spotting (pink/brown), not heavy flow.
• Lasts hours to 1–2 days.
• No clots, minimal/no cramping.

Differential for Early Bleeding

• Breakthrough bleeding (hormonal adjustment).
• Cervical ectropion (post-coital).
• Early pregnancy loss / ectopic (requires evaluation).

Absence of implantation bleeding does not indicate non-pregnancy or poor prognosis.