Breakthrough bleeding typically lasts a few days, often presenting as light spotting rather than a full period. For most people starting a new hormonal birth control method, breakthrough bleeding can occur intermittently during the first 3 to 6 months and usually decreases over time as the body adjusts to the hormones

. If breakthrough bleeding occurs, it generally should not last more than 7 days. If it does persist beyond a week, it is advisable to consult a healthcare provider to rule out other causes or consider adjusting the contraceptive method

. In summary:

• Breakthrough bleeding often lasts a few days, commonly as light spotting.
• It is most frequent during the first 3 to 6 months of starting hormonal birth control.
• If bleeding lasts more than 7 days, medical advice should be sought.
• Over time, breakthrough bleeding typically decreases and may stop altogether after a few months