Essentially, the birth control pill manipulates two hormones.

Important note: One missed day does not necessarily mean an unplanned pregnancy.

You also may experience nausea, weight gain, and/or bloating.

birth control pack against a pink background

Finally, headaches and mood swings can also happen, according to Samra-Latif Estafa.

Keep in mind that missing one day isn’t the end of the world.

If you tend to miss several pills often, consider switching to adifferent form of birth control.

woman holding contraceptive pills at a table with a glass of water