Implantation bleeding typically lasts between a few hours to up to three days, with most sources indicating it usually lasts one to two days. It is generally light spotting or a very light flow, not heavy bleeding, and often appears as pink, brown, or rust-colored discharge rather than the bright red of menstrual blood

. Key points about implantation bleeding duration:

• Usually lasts 1 to 3 days, often just a day or two

• Some people experience it for only a few hours, while others up to 48 hours or rarely longer than three days

• If bleeding lasts longer than three days or is heavy, it is likely not implantation bleeding and should be evaluated by a doctor

In summary, implantation bleeding is short-lived, typically lasting no more than a few days, and is characterized by light spotting rather than a full menstrual flow.