Implantation Bleeding: Symptoms, Duration, and Pregnancy Testing

Implantation bleeding may occur when the fertilized egg implants in the uterine lining. It is typically light, brief (hours to a few days, occasionally up to a week), and appears pink, brown, or red—different from menstrual blood.

However, implantation bleeding is not a reliable pregnancy sign, as similar spotting can occur during the menstrual cycle. Confirm pregnancy with a test.

Pregnancy Tests

Tests detect human chorionic gonadotropin (hCG), produced by the developing placenta. Levels rise rapidly in early pregnancy. Tests can be taken as early as 10–14 days after ovulation, with accuracy increasing over time.

If light bleeding persists or you have concerns, consult a healthcare provider for evaluation.