Period off sync! Help!

Hello ladies, I'm on birth control and have been on the same one for a year and a half. This month the time when I started to take the sugar pills doesn't match up with my period log. It says I shouldn't be getting it for another week. I haven't gotten it and it's been 5 days on sugar pills. I'm supposed to start taking my pills soon but I know my period is coming within the next week. Should I just not take my pills until I get it? Or should I just keep taking my pills and deal with it when it happens.