It's generally not recommended to skip a period. I did for our wedding and honeymoon, but it was one. I don't see why you need to not have a period for a year, so that you don't have a period on your wedding day? Why can't you just skip the sugar pills if they happen to fall on that date?
I don't agree, my gynae recommended going for 3-6 mths at a time for my endo. A lot of people do it.
You might be having some break through bleeding - a little spotting around when your period should be due.