So, when a woman misses 1 pill in week 2, what is her risk the following 7 days? No matter what her pamphlet says- very low. If a woman loses one pill in her pack, can she just take tomorrow's pill and continue on as if nothing has happened? Yes. No matter what COC she is on. In fact for many pamphlets that address this specific issue, like Mercilon or Co-cyprindiol, this is the recommended advice. The difference between 20 and 21 active pills before a 7 day break is insignificant.