The advice for missing a pill depends on whether your pill has desogestrel or not. Check the leaflet that comes with your pill if you’re not sure.8
If it’s been less than three hours for a non-desogestrel pill, or less than 12 for a desogestrel pill, you’re still protected against pregnancy. Just take the missed pill as soon as you remember. If it’s been longer than this, you won’t be protected. Take your pill as soon as you remember, even if that means two in one day. You’ll need to use condoms for the next 2 days afterwards.8
If you throw up within 2 hours of taking your pill, your body probably won’t have had time to absorb it. You should take another pill straight away after being sick and then take your next pill at the usual time. If you follow these steps, you should still be protected from getting pregnant.7
If you’re throwing up or have diarrhoea for more than 24 hours, try to take the pill as normal but also use extra contraception such as condoms if you have sex. Count each day you have sickness and diarrhoea as a day you have missed your pill and take extra precautions.7