Side-effects
- With no break in the dosage, menstrual flow does not initially occur at a predictable time. Most women tend to establish, over a few months, light spotting at approximately regular intervals.
- May cause mastalgia (breast tenderness) and mood swings.
- Weight gain is less commonly experienced than on COCP.
- Some women may experience abdominal cramps and heavy bleeding.
Read more about this topic: Progestogen-only Pill