nah, it doesn't hurt to have it while wearing the patch. Using the patch to skip will only work if you wear it straight through though. For example, change each week for a month as usual and then when it is time for your week off just keep going with the weekly patches for the next month. Just starting the patch the week before you get your period won't make your period go away though.

I hope I'm making sense... didn't get much sleep last night