Implantation: When It Happens and What It Feels Like

Guides. Updated October 11, 2026. Calculated with the standard pregnancy dating method used by ACOG and the NHS.

Implantation is when the developing embryo attaches to the lining of the uterus. It usually happens 6 to 12 days after ovulation, most often around days 8 to 10.

Implantation bleeding

Some people notice light spotting around this time. It is usually pink or brown and much lighter than a period, but many people have no bleeding at all.

Other signs

Mild cramps can happen, but they are hard to tell apart from premenstrual symptoms.

Testing after implantation

hCG only starts rising after implantation, so wait at least a few days afterwards, and ideally until your period is due, before testing.

This article is general information, not medical advice. Talk to a doctor or midwife about your own pregnancy or fertility.