The minipill thickens cervical mucus and thins the lining of the uterus (endometrium) — preventing sperm from reaching the egg. The minipill also suppresses ovulation, but not consistently. For maximum effectiveness, you must take the minipill at the same time every day.

Do you get ovulation discharge on the pill?

Vaginal discharge from the birth control pill can be consistent, or it can come and go. It's normal to experience some fluctuations in vaginal discharge throughout your cycle even after you start using hormonal birth control.

Can you get pregnant on the mini-pill?

If taken correctly, it's more than 99% effective. This means fewer than 1 in 100 who uses the progestogen-only pill as contraception will get pregnant in 1 year. With "typical use" of the progestogen-only pill (the way it's taken by a lot of women in real life), it's only about 91% effective.