You can continue taking the oral contraceptive pill after taking ellaOne®, but it might not be as effective until after your next period. You should use a condom or a diaphragm until then. This is because ellaOne® might impact the effectiveness of regular hormonal contraceptive methods (also including the patch or vaginal ring) for the length of that cycle.
Once you’ve had your period, you can relax and for your next cycle you can stick to your regular contraceptive method – just remember to use it correctly! In case your period is more than 7 days late, if your period is abnormal in character or if there are symptoms suggestive of pregnancy or in case of doubt, a pregnancy test should be considered.