I really don't recommend eating the ECP regularly. It hurts your uterus because it's hamrfully stimulating it with one extremely large dose of estrogen, causing it to shed the uterine lining prematurely. In fact, you're not supposed to eat it more than two times a month. The first time I took it I started feeling cramps an hour later.

Disclaimer: Ate ECP and now on BCP due to hormonal problems and not for birth control purposes so my experience may differ from other people. I have to eat 3 BCPs a day