For the seven days after you begin taking your pill again, use another form of contraception, such as condoms. It will take seven days for your contraceptive protection to be effective once again.
If when you finish the second pack, you don't have a bleed during the seven-day break, see your doctor.
If you had sex in the seven days before your forgot your pill, you should either purchase the morning after pill (emergency contraception) from a pharmacy or see your doctor for a prescription. Do this as a matter of priority.
A Question Of Priorities
What you do if you've forgotten to take a pill will depend on your priorities. Ask yourself this - how important is it to you not to be pregnant?
Is it worth seeing your doctor, just in case? Is it really a huge inconvenience to use condoms for the next seven days, if it will guarantee protection?