Giggles, you are paying the price for not taking your pills at the same time every day. This is important. If your hormone level drops below a certain point, your body will think you reached the inactive pill week and start to bleed. This is withdrawal bleeding, not menstruation.
Just follow the pill pack and do not skip anything. If you took your pills as you should the last 7 days, you can have all the sex you want during your bleeding week without being worried.
Take care and remember to take those pills every single day at more or less the same day.