i dont know if we are supposed to quote sites but i found this, hope it helps...
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- What do I do if I miss a pill?
You should try and take your pill at the same time every day to help you remember to take it. If you forget to take a pill, you should take it as soon as you remember (even if that means taking two pills in one day) and then continue to take your pills, one every day, as normal.
With Microgynon, if you have missed ONE or TWO pills anywhere in the packet, you will still be protected against pregnancy and you don't need to use extra contraception. Take the last pill you missed as soon as you remember, then continue taking your pills as normal.
If you forget to take THREE or more pills, you won't be protected against pregnancy. You should take the last pill you missed as soon as you remember, forget the other missed ones and then continue to take your pills, one every day, as normal. You should then either not have sex, or use an extra barrier method of contraception, eg condoms, until you have taken a pill correctly for next seven days in a row. If the pills you missed were in the third week of your packet, you should skip the pill-free week and start a new packet straight away. If the pills you missed were in the first week of your packet and you had unprotected sex in that week, or in the pill-free week before, it may be recommended that you take emergency contraception (the morning after pill). Ask for medical advice.
If you are confused about any of this, you can get individual advice for your circumstances from your doctor, pharmacist, local family planning clinic.
Warning!
The information and advice that we give in this factsheet is likely to conflict with the information you will find in the manufacturer's leaflet provided with your pills. This is particularly the case with regards starting the pill and what to do if you miss a pill. The reason for the differences is because the manufacturer's leaflets are out of date and unfortunately are not likely to be updated in the near future. The information and advice we give in this factsheet are the same as the UK fpa (formerly The Family Planning Association) recommendations, which are based on systematic reviews of the currently available evidence. If you are concerned or have any questions, you can ask your doctor, nurse, pharmacist or local family planning centre for advice."