I am on birth control and I did take plan B during this months of birth control. I know that Plan B can screw up your cycle. But because I am on birth control will I still get my period during the off week?

The simple answer is that you might or you might not. It may depend on where you were in your cycle when you took the plan b, but even then, everyone is different in how their body may respond to the extra hormones.

If you are concerned about not having a period and wondering if it is due to pregnancy, odds would be very low if you have been on birth control and took plan b as well.