Has your period already finished? Cos if it has finished completely and there is no flow, the best thing for you to do is NOT take the placebos and continue on to the next pack of hormone pills and take that pack as normal.
If your flow HASN'T finished, don't do this, as the period might continue on until your next placebo break. If you're still on your period, take the placebo pills this week as would have been scheduled, and your bleed should stop somewhere during those. You won't get 'another' period or anything like that, but the one you're having now should abate. Remember, only take the 7 (as scheduled) and then on to your next pack as you usually would.
With both of these options you WILL be contraceptively covered. Do NOT halt your pills altogether and have a natural period, this, more than anything, will confuse your body as it has to begin ovulating, then stop again, not to mention the fear of pregnancy!
Hope I helped!