I never had a regular period before I started using the patch. It used to come every 2 or 3 months. I've used the patch for about 6 months and my period became regular. However, I stopped using the patch about a month and a half ago. My period did not come on the regular day it did when I was using the patch. Should I be worried? I have not taken a pregnancy test yet. Like I said, it has been about a month since I stopped using it.

**Does the patch throw off your period cycle when you stop using it?