Unfortunately, I do not find in the drug lists of the preparation "Aktywia" . If your question concerns the pharmacy drug Atywia, please read on. In this case, the 18th active tablet of Atywia (i.e. the tablet from week 3) was omitted. If the previous tablets have been taken correctly, if you miss a tablet from week 3, there are 2 ways to proceed: 1. Take the missed tablet as soon as possible (even if it means taking two tablets at the same time) and the next one at the usual time. Then you should start taking the tablets from the next package immediately after finishing the current one, i.e. without a 7-day break. Withdrawal bleeding will occur after the second pack is completed, but spotting or bleeding may occur on the days of taking the tablets. 2. You can also no longer take the tablets from the current pack, take a 7-day break or less (the day on which you missed the tablet should also be included), after which you should continue taking the tablets from the next pack. Since you did not notice the omission and continued to use the medicine, follow the procedure described in section 1. The next tablets should be used at a fixed time, and then, without a 7-day break, start a new package of the drug (i.e. tomorrow - Sunday 07.05). In this way, you will maintain the continuity of contraceptive protection. You can read more about how to use contraception correctly in our article: https://www.gdziepolek.pl/artykuly/jak-prawidlowo-stosowac-antykoncepcje I enclose a link to check the availability of Atywia and make a reservation at the selected pharmacy: https://www.gdziepolek.pl/produkty/8018/atywia-tabletki-powlekane/apteki