Did you know that birth control pills can allow women to forgo their periods by taking the active pills continuously and completely skipping the placebo pills?

This works best with pills that are monophasic, which means they deliver the same level of hormones during the three weeks of active pills. Generally, healthcare providers agree that if you’re in the clear to take hormonal contraceptives, the same can be said about you missing your periods via this nifty trick.

However, do note that your personal healthcare provider may disagree, so it's a good idea to discuss this with them beforehand.

Reference: http://www.arhp.org/Publications-and-Resources/Patient-Resources/fact-sheets/Understanding-Menstrual-Suppression/