Hi Isabelle
If you take the pill regularly and you use a condom, then it is very unlikely that you are pregnant. No form of contraception is 100% effective but just because your period is late, does not mean that you are pregnant. Many factors can cause a woman to delay or skip a pregnancy - diet, sickness, stress, depression.
If your period is a week late, then take a home pregnancy test to be sure. If your period does not come again next month, you should go and seek medical advice just to make sure there is nothing else wrong with you.
best of luck to you.
