How do I tell if this is breakthrough bleeding or just a split period?

Breakthrough bleeding refers to unexpected bleeding that occurs between regular menstrual periods. This type of bleeding is often associated with the use of hormonal contraceptives, such as birth control pills or hormonal IUDs. According to the provided references, disturbances in endometrial bleeding can occur with hormonal treatments, and specific bleeding patterns are noted with devices like the Liletta® levonorgestrel IUD.

On the other hand, a split period might simply be a variation in your menstrual cycle, where bleeding stops and starts again within a short period. This can happen naturally due to various factors such as stress, diet, or changes in routine.

How to Identify the Difference:

• Breakthrough Bleeding: Often light and occurs unexpectedly between periods. It might be more common if you have recently started or changed hormonal contraceptives.
• Split Period: May occur if your period seems to pause and resume within a few days. It generally follows your typical cycle pattern.

If you experience unexpected bleeding, especially if it's frequent or heavy, it's a good idea to talk to a healthcare provider. They can help determine the cause and provide guidance on managing your symptoms.